ฝึกพูดภาษาอังกฤษด้วยเทคนิค Shadowing จากวิดีโอ: How Foods & Nutrients Control Our Moods | Huberman Lab Essentials
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Welcome to Huberman Lab Essentials, where we revisit past episodes for the most potent and actionable science -based tools for mental health, physical health, and performance.
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My name is Andrew Huberman, and I'm a professor of neurobiology and ophthalmology at Stanford School of Medicine.
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This podcast is separate from my teaching and research roles at Stanford.
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Today, we're talking all about emotions.
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Emotions are central to our entire experience of life.
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Whether or not we're happy or sad or depressed or angry is our life experience.
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And yet I think with all the importance that we've placed on emotions, very few people actually understand how emotions arise in our brain and body.
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And I mentioned brain and body because as you'll see today, emotions really capture the brain -body relationship.
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We cannot say that emotions arise just from what happens in our head.
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The other thing about emotions is that there's no real agreement as to what's a good emotion or a bad emotion.
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Today, we're going to talk about the biology of the chemicals
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and pathways that give rise to emotions in the context of food and nutrition.
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The discussion around emotions has a long and rich history going back to Darwin and even long before Darwin.
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You know, this is a conversation that philosophers and scientists have been having for hundreds, if not thousands of years.
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You know, the idea that Darwin put forth and
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that was really attractive for about the last hundred years was
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that emotions are universal and that some of the facial expressions around emotion are universal.
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And other people have, you know, capitalized on that idea.
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And to some extent it's true.
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I mean, I think that the two most robust examples of
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that would be when we see something or we smell something or we taste something that we like, there does tend to be a postural leaning in.
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We tend to inhale air at that time we tend to bring in more of whatever chemical substance is there.
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So we tend to do these and, you know, and kind of lean in closer to things that are attractive to us.
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And when we see and experience things that we don't like, sometimes it's a mild aversion.
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We just kind of lean back or look away.
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Other times it's an intense aversion of disgust and we tend to cringe our face.
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We tend to avoid inhaling any of the chemicals.
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This probably has roots in ancient biological mechanisms that are to prevent us from ingesting things that are bad for us,
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chemical compounds and tastes that might be poisonous.
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So much of the foundation of any discussion about emotion has
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to center around this kind of push -pull of attraction to things or aversion from things.
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Now, that's a very basic way of thinking about emotions, but if you think about it, it works for a lot of different circumstances.
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And in the brain, everywhere from the deep circuits of the brain to the more kind of what we call higher order
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or evolved centers of the brain, we have this push -pull thing.
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We're either, in a previous episode, I talked about go, the circuits that allow you to emphasize action, and then no -go circuits,
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the circuits in the basal ganglia that allow you to de -emphasize action and prevent action.
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And so we can break down the discussion about emotions into these simpler versions of themselves
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but at the core of that of attraction
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or aversion is an important theme that you might realize already
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but most people tend to overlook which is
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that there's an action there you're either moving forward
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or you're moving away from something the brain has a body
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so that the organism can move and the body has a brain
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so that the organism you can move toward or away from things
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that you deem to be good or bad for you
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so there are circuits in the brain for a and for attraction toward things.
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And the body is governing a lot of that.
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And so immediately in this conversation, I want to raise an important point, which is about a nerve pathway that many,
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many people have heard of that gets discussed all the time.
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And that is one of the most kind of oversold for the wrong reasons and undersold, unfortunately, for its real power, which is the vagus nerve.
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So the vagus nerve is one, not the only, but one way in which our brain and body are connected and regulates our emotional states.
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So what is the vagus nerve?
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Vagus is the 10th cranial nerve, which basically means that the neurons,
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the kind of the control center of each of those neurons in the vagus lives just kind of near the neck, right?
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And a branch of the vagus goes into the brain.
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The other branch goes into the periphery, but not just the gut.
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It goes into the stomach, the intestines, the heart, the lungs, and the immune system.
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So the way to think about the Vegas is the same way I would think about the eyes.
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The eyes are looking at colors, they're looking at motion, they're looking how bright it is.
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And each one of those - things, those features is telling the brain something different so the brain can decide when to be awake or asleep, whether or not it's looking at somebody attractive or unattractive.
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The vagus nerve is also analyzing many features within the body
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and informing the brain of how to feel about that and what to do.
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So a really good example that I think is an exciting one is as it relates to sugar.
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So we all know that sweet things generally taste good.
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So that makes sense, right? you eat something, it tastes sweet, you want more of it.
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Well, it turns out that it's much more interesting than that.
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When you eat something sweet, within your stomach, you have cells, neurons, that sense the presence of sugary foods,
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independent of their taste, and signal to the brain.
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So those sensors, those neurons, send information up the vagus to your brain, goes through a series of stations and then you release dopamine,
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this molecule that makes you want more of whatever it is that you just ingested.
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In fact, this pathway is so powerful
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that they've done experiments where they completely numb all the taste and feeling in somebody's mouth.
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They're blindfolded so they don't know what they're eating and they're eating a food that's either sugary or not sugary.
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And what they find is that even though people can't taste the sugary food.
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They crave more of the food that contains sugar because of the sensors in the gut that sense sugar.
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And what it tells us is that we have circuits in our body
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that are driving us towards certain behaviors and making us feel good, even though we can't perceive them.
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Now, for those of you that are really interested in gut intuition and kind of gut feelings, this is a gut feeling, except this is a chemical gut feeling.
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This is a particular set of neurons detecting that something in your body has a particular feature.
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In this case, the presence of sugars and sending information to the brain to essentially to control your behavior.
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And I find this remarkable.
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I mean, this should completely reframe the way that we think about the sort of so -called hidden sugars in foods.
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What this means is that even if a food is very savory, like a piece of pizza or a piece of bread or even like a salad dressing.
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If there's sugar snuck into that and you can't taste it, you will still crave more of that thing without knowing that you crave it because it has sugar.
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So I find this to be a fascinating aspect of our biology.
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A lot of how we feel while we eat
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and after we eat is because of this vagus sensing of what's in our gut.
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It's sending information all the time.
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Is there sugar?
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Are there fats?
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Are there contaminants?
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There are a lot of information, these so -called parallel pathways that are going up into our brain
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that regulate whether or not we want to eat more of something or not.
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And there are accelerators, things that make us want to eat more, like sugar and fats, because those are nutrient dense and they helps generally, at least in the short term,
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support the survival of animals, but also amino acids.
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And this is very important.
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There are a lot of data, but much of what comes from the data on what people eat
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and how much they eat is from a subconscious detection of how many amino acids and what the array,
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meaning the constellation of amino acids is in a given food.
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And it's fair to say
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that the sum total of these studies point in a direction
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where people will basically eat not until their stomach is full
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but until the brain perceives that they have adequate intake of amino acids.
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It's amino acids, of course, are important because they are the building blocks of, sure, muscle and the other things in our body that need repair.
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But what most people don't realize is that amino acids are what the neurochemicals in the brain are made from.
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Now, this is vitally important, okay?
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So we've heard dopamine is this molecule that makes you feel good.
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Dopamine release is caused by surprise, excitement, events that you're looking forward to and that turn out well.
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It is inhibited by events you're looking forward to that don't work out.
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It's called reward prediction error.
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Your expectation of something releases dopamine and the actual event releases dopamine.
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And if the event -related dopamine does not exceed the expectation or at least match it,
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there's a much higher tendency and see that you won't pursue that thing again.
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Dopamine is what's going to lead us to want to eat more of something
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or to not want more of something because dopamine really is about craving.
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It's about motivation and it's about desire.
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And as I mentioned, these amino acid sensors in our gut are detecting how many amino acids, but they're also detecting which amino acids.
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And there's a particular amino acid called L -tyrosine, which comes from food.
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It is in meats, it is in nuts, it is also in some plant -based foods.
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L -tyrosine is the precursor to a couple other molecules like L -DOPA, et cetera, that make dopamine.
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However, the dopamine neurons that give rise to these feelings of good or wanting more or desire and motivation, those reside in the brain.
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So we don't want to get too confused.
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We want to respect and honor the power of the gut and this vagal pathway, but it's really neurons within your brain that drive the pursuit and decision -making.
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So what does this mean?
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Well, some people make too little dopamine.
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Some people make so little dopamine that they need prescription dopamine.
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They need L -dopa.
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People with Parkinson's take L -dopa and other compounds to increase dopamine because Parkinson's is associated with deficits in movement.
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Parkinson's is a depression.
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It's a blunting of motivation and mood and affect, and it's a tremor.
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And then eventually in severe conditions, it's challenges in speaking and walking.
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So that some famous examples would be, you know, Muhammad Ali, Michael J.
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Fox, the great boxing trainer, Freddie Roach, like these people have Parkinson's and they at least later in their life had challenges speaking.
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Now, some people immediately ask, well, should I supplement L -tyrosine?
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It does increase kind of mood and elevation and alertness.
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It is over the counter.
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You have to check with your doctor.
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I'm not responsible for your healthcare and I'm not a doctor, whether or not it's safe for you.
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People with preexisting hyper -dopaminergic conditions like mania should probably not take L -tyrosine.
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The other thing about taking L -tyrosine is there is a crash, okay?
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It's not a massive crash if you take it at appropriate doses and it's right for you,
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but it can produce a crash and a lethargy and a kind of brain fog after the next day or so.
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And so L -tyrosine, however, can be ingested through foods or through supplementation to increase dopamine levels.
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That's well -known.
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Taken chronically, however, it can disrupt those dopamine pathways.
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Let's just kind of take stock of where we're at.
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We have a brain -body connection.
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There are many of them, but one of the main ones is the vagus nerve.
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The vagus collects information about a lot of things, breathing, heart rate, stuff that's happening in the gut, et cetera.
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And gut, by the way, includes the stomach and the intestines, sends that information up to the brain.
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The brain is using that information to decide one of two things, move toward something or move away.
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You can also pause, but essentially pausing is not moving toward.
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So that's the dopamine pathway
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and foods rich in L -tyrosine generally give us an elevated mood
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and make us want to do more of whatever it is that we happen to be doing as well as other things.
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Motivation generalizes to other things.
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It's not unique to just ingesting foods, But foods that give us a big pulse of dopamine will make us crave more of that food.
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It will make us crave more of the activity that led to the ingestion of that food.
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And as I mentioned earlier, a lot of that is happening at a subconscious level that you're not even aware of.
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So the other neuromodulator that's really interesting in the context of the vagus is serotonin.
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Serotonin, just to remind you, is a neuromodulator.
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Therefore, it creates a bias in which neural circuits, which neurons in the brain and body are going to be active
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and it makes it less likely that other ones are going to be active.
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And serotonin, when it's elevated, tends to make us feel really comfortable and kind of blissed out wherever we are.
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And that contrasts with dopamine and epinephrine, which mainly put us in pursuit of things.
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Motivation is pursuit.
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The conversation around the brain -body relationship and mood and serotonin for many years was, well, you eat a big meal, the gut is distended, you've got all the nutrients you need,
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you rest and digest and serotonin is released.
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That's sort of true, but there's a lot more going on and a lot more that's interesting and actionable that's going on.
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First of all, some of you, but perhaps not all, have heard that more than 90 % of the serotonin that we make is in our gut.
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And indeed, we have a lot of serotonin in our gut.
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But here's the deal.
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Most of the serotonin that it impacts our mood and our mental state is not in our gut.
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Most of it is in the neurons of the brain in an area called the raphae nucleus of the brain.
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There are a few other locations too.
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You can't have a discussion about serotonin without having discussion about antidepressants because during the late 80s and early 90s,
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there was this explosion in the number of prescription drugs that were released.
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Things like first one and most famous one is Prozac, Zoloft, and Paxil, a number of other ones that are so -called SSRI, selective serotonin reuptake inhibitors.
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Basically, those drugs work by preventing the gobbling up of serotonin.
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or reuptake of serotonin into neurons after it's been released, which leads to more serotonin overall, which means to elevate serotonin.
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And indeed, those drugs were
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and can be very useful for certain people to feel better in cases of depression and some other clinical disorders as well.
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Not everyone responds well to them, as I'm sure you've all heard, and their side effect profile has effects like blunting affect.
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It can make people feel kind of flat, kind of meh.
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Many people adjust their serotonin by just eating more food and carbohydrate -rich foods will increase serotonin.
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I eat a relatively high protein and moderate fat, zero carb or low carb meal at lunch
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and in the afternoon to stay alert because those foods tend to favor dopamine production, acetylcholine production, epinephrine production, and alertness.
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My mood is generally pretty good most of the time.
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And then as evening comes around and I'm concerned about sleep and a good night's sleep, not concerned in an anxious way, but I want to get a good night's sleep,
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I will ingest foods that promote serotonin release because they contain a lot of tryptophan.
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So as you're seeing, this isn't really a discussion about nutrition per se, this is a discussion about food which contains amino acids,
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amino acids being the precursors to neuromodulators and neuromodulators having a profound effect on your overall state of alertness or calmness,
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happiness, sadness, and wellbeing being so now you understand the relationship i hope between foods
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and dopamine foods and serotonin and
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that they're both being communicated to the brain via the vagus right
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so let's talk a little bit more about things
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that we ingest in our body
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and then allow our body to inform our brain to shift our mood
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but i don't think most people know this simple fact
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which is that the omega -3 to omega -6 fatty acid ratio has a profound effect on depression.
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First of all, in an experiment done in animals, they found there's a model of learned helplessness in animals.
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It's not very kind to the animals, but they put rats or mice in a jar, they let them swim, and they'll swim, swim, swim to try and save their life.
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And eventually they give up.
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It's a learned helplessness.
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They don't let them drown, they take them out.
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Adjusting the omega -3 omega -6 ratio so that the omega -3s are higher led to less learned helplessness, meaning these animals would swim longer.
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But that same study was essentially done in humans.
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What they did is they took people who were clinically depressed, major depression.
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Okay, major depression is severe maladaptive state, meaning it inhibits job, relationships, appetite, all sorts of negative health effects.
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And they did a comparison of 1 ,000 milligrams a day of EPA,
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so EPA is one of the elements that contains high levels of omega -3s that's in things like fish oil, but it wasn't 1 ,000 milligrams of fish oil,
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it was 1 ,000 milligrams of EPA.
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Compared that to 20 milligrams of fluoxetine,
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which is Prozac, they found that they were equally effective in reducing depressive symptoms.
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And what was really interesting, in addition to that, is that the combination of 1 ,000 milligrams of EPA
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and fluoxetine had a synergistic effect in lowering depressive symptoms.
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And now there are lots of studies.
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If you go into PubMed and you were to put EPA or fish oil and depression,
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you would find that there were a number of really impressive results showing that it's at least as effective as certain SSRIs, antidepressants, at these dosages.
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And it can amplify or improve the effect of low dosages of some of these SSRIs.
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You can discuss it with your doctor and family and make the choices that are right for you.
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Now, of course, I really want to emphasize something, which is that no one compound or nutrient or supplement
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or drug or behavior for
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that matter is going to be the be -all end -all of shifting out of depression
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or improving one's mood or improving sleep.
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You cannot expect to take a compound, regardless of source or potency
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and have it completely shift your experience of life without having to continue to engage in the proper behaviors, all the things we know,
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proper sleep, exercise, social connection, food, et cetera.
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Okay, so now let's turn to another aspect of the gut -brain relationship that will surprise you, in some cases might shock you,
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and that has some really cool and actionable biology and that's the gut microbiome, probiotics and prebiotics.
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So what's the deal with the gut microbiome and the gut brain axis?
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Today, we've actually been talking a lot already about the gut brain axis that has nothing to do with microbiomes.
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We've been talking about this vagus nerve that connects providing sensory information from the body to the brain.
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And then the brain also sends in the same nerve motor information to control the motility, the gut, the heart rate,
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how fast we breathe and deployment of immune stuff.
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But oftentimes when we hear about the gut brain axis these days, it's a discussion about the gut microbiome.
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I'm very happy there's so much discussion about the gut microbiome.
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I am somewhat dismayed and concerned that most of what I hear out there is either false or partially false.
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So we're going to clear up some of the misconceptions first by understanding the biology, and then we're going to talk about some of the actionable items.
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It is true that we have a lot of these little microorganisms living in our gut.
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They're not there because they want to help us.
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They don't have brains.
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They are adaptive, however.
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They try and find and create environments that make it easier for them to proliferate.
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So they don't care about you and me, but they are perfectly willing to exploit you and me in order to make more of themselves.
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The microbiota that live in us vary along the length of our digestive tract.
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So we are one long tube for digestion.
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And inside of that tube is a mucosal lining.
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And the conditions of that mucosal lining set a number of different things.
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It sets the rate of our digestion and the quality of our digestion.
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It sets, for instance, our immune system.
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We're ingesting things all the time.
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Think about air, bacteria, viruses, they're making their way into our gut.
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And some of those bacteria live in the gut.
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And some of those bacteria bias the mucosal lining in the gut,
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stomach and intestines, to be more acidic or more basic so that they can make more of themselves, so they can replicate.
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Now, some of those mucosal linings that they promote make us feel better.
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They make us feel more alert.
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They bolster our immune system and others make us feel worse.
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So first rule, the microbiome isn't good or bad.
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Some of these little bugs that live in us do bad things to us.
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They make us feel worse.
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They lower our immunity.
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They affect us in negative ways.
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Some of them make us feel better.
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And they do that mainly by changing the conditions of our gut environment.
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In addition to that, they do impact
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the neurotransmitters and the neurons that live in the gut and
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that signal up to the brain to impact things like dopamine and serotonin that we've been talking about previously.
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So there's a vast world now devoted to trying to understand what sources of food,
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what kinds of foods are good or not good for the gut microbiome.
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Here's a few things that I think you might find surprising.
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First of all, supporting a healthy gut microbiome is good for mood, great for digestion, and great for immune system function.
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However, that does not mean maxing out or taking the most probiotic and prebiotic that you can possibly manage.
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As I mentioned many times before, I do believe in probiotics.
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I take probiotics, but there are studies that show that
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if you take lots and lots of certain probiotics like lactobacillus and you really ramp up the levels more, it is not a case of more is better.
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There are things like brain fog that can come from that.
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Brain fog is just this inability to focus.
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People feel really not well generally.
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Some of those studies are a little bit controversial, but I think it's fair to say that
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if people really increase the amount of probiotic that they're taking beyond a certain amount,
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then they start feeling foggy in the mind.
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The ingestion of fermented foods is one of the best ways
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to support healthy levels of gut microbiota without exceeding the threshold that would cause things like brain fog.
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so much so that some people report that when they start eating small bits, because it doesn't require a lot of fermented foods, that their overall mood is better, not unlike the effects of EPA,
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although I don't think it's been looked at directly in the context of clinical depression yet.
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There are some things that you can do to really damage your gut microbiome, and this is where there's a huge misconception that I want to clear up.
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There was a study that showed that artificial sweeteners, but a particular artificial sweetener,
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which was saccharin, can disrupt the gut microbiome in ways that is detrimental to a number of different health markers,
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increasing inflammatory cytokines and all the other bad things that happen
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when the gut microbiome is.. thrown off kilter saccharin is not
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the most typical artificial sweetener that's used the most typical sweetener artificial sweeteners
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that are used are things like aspartame so -called nutrasweet or sucralose
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or these days stevia to my knowledge the negative effects of
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these artificial of artificial sweeteners on the gut microbiome were restricted to saccharin so what What happens is certain artificial sweeteners,
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in particular saccharin, disrupt the microbiome and make the environment within the gut,
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that mucosal lining, more favorable to bacteria microbiota that are not good for the organism, okay?
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This is an important distinction.
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It's not just that a language thing where people say, oh, you know, it kills the microbiome.
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It doesn't kill the microbiome, it shifts the microbiome.
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and shifts in the microbiome can be good or they can be bad.
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And that takes us to another topic.
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That's a bit of a hot button topic, but I'm willing to go there because I think it deserves conversation, which is nowadays,
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there are many examples out there where people have switched from a kind of standard diet
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or even a vegetarian diet or vegan diet to a keto diet.
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Now, keto doesn't necessarily have to mean the ingestion of meats, but it can.
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And they experience positive effects for themselves.
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But the ketogenic diet is interesting because when one shifts to the ketogenic diet, there is a shift in the gut microbiome and some people end up feeling better.
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Some people end up feeling worse.
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Likewise, some people go from ingesting animal products,
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including meat or they're vegetarian and they go to vegan and they experience positive shifts in mood and affect.
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So the point of all this is that when I say you have to find what's right for you, That's not a throwaway statement.
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Some people's microbiome and the mucosal lining of their throat, of their gut, of their nose,
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everything is improved by diets that are heavily meat -based and don't have many plants.
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Other people do much better on a plant -based diet without many meat products or animal products.
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It's highly individual.
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And this probably has roots in genetic makeup.
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This probably has roots in what people were raised on because remember the nervous system, of course, is set up by your genes,
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your genetic program, but your nervous system, it adapts early in life to your conditions.
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That's what it's for.
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The reason you have a nervous system is to move your body appropriately towards things
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that are good for you and away from things that are not, but also it was designed to adapt.
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So that yes, indeed, some people may like certain foods
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and react to certain foods better than others because of the way that their nervous system was wired, this enteric, as it's called, nervous system that lines the gut and that communicates with the brain.
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So most of what I've talked about today is black and white.
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These are things that are present in all of us, the sugar -sensing neurons of the gut, the way the vagus is wired, the fact that omega -3, omega -6s tend to improve,
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the ratios tend to impact mood with high omega -3, omega -6 ratios improving mood.
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We talked about all sorts of things in the gut -brain and body -brain axis.
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But when it comes to the microbiome, the key thing is that we all have a microbiome.
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You want a microbiome, but you want to promote the microbiome that is right for you.
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And that can be shifted and steered by ingesting certain categories of foods and not others.
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It's very clear that these fermented foods support the microbiome, that we should be ingesting at least two servings per day, which is quite a lot.
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That supplementation at low levels can be good.
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Supplementation at high levels can create this brain fog.
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Even though some people say that result is controversial, I've experienced this myself and the data looked to me pretty darn solid.
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So that's one thing to think about as well.
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And the other thing about the gut microbiome is that it's highly contextual based on other things that you're doing.
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So even things like exercise and social wellbeing and connection, those things are also impacting the gut microbiome.
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So find the diet that's right for you and
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that works for you in the context of the other ethical and lifestyle choices that are are important to you, that's my advice.
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So as we round up, I want to share some results with you
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that without question will impact the way that you respond to food mentally and even physically.
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I have a colleague at Stanford, Aaliyah Crum, who's done some remarkable experiments on mindset.
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Two that are particularly interesting to me, I want to share with you now because they really emphasize
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how our beliefs can really impact the way that our brain and body work together.
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I think the most famous of these is an experiment they did where they had two groups of individuals.
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They were each given a milkshake
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and they had some factors measured from their blood by an IV while they ingested the milkshake and then afterwards as well.
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And one of the factors that they were looking at was something called ghrelin, G -H -R -E -L -I -N.
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Ghrelin is a peptide that increases with hunger.
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So the longer you haven't eaten, the ghrelin goes up.
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One group got a shake that they were told was a low calorie, healthy shake.
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The other group got a milkshake that they were told was the very decadent high calorie shake.
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And what they found was that the high calorie shake had a much more robust effect on blunting ghrelin and reducing ghrelin.
356
But the interesting thing you probably guessed already is that it was the exact same shake given to both groups.
357
And this speaks to these so -called top -down mechanisms or modulation of our physiology.
358
In a previous episode about pain, we talked about the effects of obsessive infatuation and love on pain responses and pain thresholds.
359
This is yet another example where beliefs
360
or subjective feelings can impact physiology at the level of the periphery because ghrelin is released in the periphery in the body.
361
And so this is not just the placebo effect, this is an incredible set of findings that illustrate the extent to
362
which whether or not we believe a food is going to be good for us or not good for us, these belief effects are not about lying to yourself.
363
So in order for them to work, you have to be naive to the information, right?
364
You can't simply lie to yourself and tell yourself, what you want to believe and that's important but also important is
365
that the mind and the body are in this fascinating interplay
366
and today we've talked mainly about how the body and things
367
that we put inside this tube this uh
368
that runs from our mouth to to the other end to
369
our rectum basically is impacting all these cells these neurons microbiota in their um mucosal lining heart,
370
lungs, and how all that information is feeding up to the brain to impact how we feel up here.
371
But also how we feel up here is impacting how our body reacts at levels of very core physiology
372
that you couldn't just tell yourself that this was going to work, but what you believe about certain substances, certain foods,
373
certain nutrients does have a profound effect on the magnitude of their impact
374
and sometimes even the quality and direction of that impact.
375
So today's episode, we took a full journey into the brain -body relationship
376
and discussed a lot of the mechanisms and the actionable items
377
that you can approach if you want to explore this aspect of your biology and psychology further.
378
Last, but certainly not least, I want to thank everybody for your time and attention today.
379
And as always, thank you for your interest in science.
ดาวน์โหลดแอป
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คำศัพท์และข้อสังเกตด้านการพูดสำหรับบทเรียนนี้
บทเรียนฝึกพูดระดับ C1 นี้ใช้วิดีโอ “How Foods & Nutrients Control Our Moods” เป็นสื่อ คำที่ถูกพูดซ้ำบ่อยที่สุด: brain, gut, microbiome, dopamine วิดีโอนี้มี 379 ประโยค และ 5546 คำ สำหรับฝึกพูดตาม ช่วงที่มีเสียงพูดยาว 32:28 ผู้พูดพูดด้วยความเร็วเป็นธรรมชาติ ประมาณ 171 คำต่อนาที ใกล้เคียงกับบทสนทนาในชีวิตประจำวัน มีเพียง 80% ของคำที่อยู่ใน 3,000 คำที่ใช้บ่อยที่สุดในภาษาอังกฤษ คำศัพท์จึงค่อนข้างยาก
คำศัพท์สำคัญในวิดีโอนี้
คำที่ยากที่สุด 15 คำในวิดีโอ พร้อมคำอ่านและความหมาย:
| คำศัพท์ | คำอ่าน | ความหมาย |
|---|---|---|
| dopamine คำนาม | /ˈdoʊ.pəˌmin/ | โดพามีน, โดปามีน |
| serotonin คำนาม | /ˌsɛɹəˈtoʊnɪn/ | เซโรโทนิน, ซีโรโทนิน |
| omega คำนาม | /oʊˈmeɪ.ɡə/ | โอเมกา |
| sweetener คำนาม | น้ำตาลเทียม | |
| milligram คำนาม | /ˈmɪlɪɡɹæm/ | มิลลิกรัม |
| bacterium คำนาม | /bækˈtɪəɹ.ɪəm/ | แบคทีเรีย, บัคเตรี |
| digestion คำนาม | /daɪˈd͡ʒɛst͡ʃən/ | การย่อยอาหาร |
| saccharin คำนาม | /ˈsækəɹɪn/ | ขัณฑสกร, ดีน้ำตาล |
| nutrient คำนาม | /ˈnuː.tɹi.ənt/ | สารอาหาร |
| emphasize คำกริยา | /ˈɛm.fə.saɪz/ | เน้น, เน้นย้ำ |
| axis คำนาม | /ˈæksɪs/ | แกน |
| ferment คำกริยา | /fɚˈmɛnt/ | หมัก |
| intestine คำนาม | /ɪnˈtɛs.tɪn/ | ลำไส้, ไส้ |
| milkshake คำนาม | /ˈmɪlk.ʃeɪk/ | นมปั่น |
| organism คำนาม | /ˈɔɹ.ɡəˌnɪz.əm/ | สิ่งมีชีวิต |
กริยาวลีที่คุณจะได้ยิน
| คำศัพท์ | ความหมาย |
|---|---|
| give up คำกริยา | ยอมแพ้ |
ประโยคที่ควรฝึกพูดซ้ำ
ประโยคสั้น ๆ ที่สมบูรณ์จากวิดีโอ ซึ่งนำไปใช้ในบทสนทนาประจำวันได้:
- Today, we're talking all about emotions.
- They're not there because they want to help us.
- We're ingesting things all the time.
ไวยากรณ์ในวิดีโอนี้
โครงสร้างที่ผู้พูดใช้บ่อยที่สุด พร้อมคำพูดจริงจากวิดีโอ:
| โครงสร้าง | ในวิดีโอ |
|---|---|
| Present perfect continuous have/has been + -ing — การกระทำที่เริ่มก่อนหน้านี้และยังดำเนินอยู่ | have been having · we've actually been talking · We've been talking |
| Present perfect have/has + กริยาช่อง 3 — เหตุการณ์ในอดีตที่ยังเกี่ยวข้องกับปัจจุบัน | we've placed · have heard · they've done |
| Passive voice be + กริยาช่อง 3 — เน้นสิ่งที่เกิดขึ้น ไม่ใช่ผู้กระทำ | are connected · are made · is caused |
| Relative clauses who / which + อนุประโยค — ข้อมูลเพิ่มเติมเกี่ยวกับคนหรือสิ่งของ | overlook which is · point, which is · power, which is |
การออกเสียงที่ควรระวัง
ผู้พูดใช้รูปย่อและรูปลดเสียง 71 ครั้ง เช่น don't, they're, we're ให้พูดแบบสั้นตามที่ได้ยิน
- เสียง “sh” และ “zh”: actionable /ˈæk.ʃə.nə.bəl/, aversion /əˈvɜːʒən/, milkshake /ˈmɪlk.ʃeɪk/, subconscious /sʌbˈkɑn.ʃəs/, expectation /ˌɛk.spɛkˈteɪ.ʃən/
- คำยาว — ลงเสียงหนักให้ถูกพยางค์: serotonin /ˌsɛɹəˈtoʊnɪn/, probiotic /ˌpɹoʊ.baɪˈɑ.tɪk/, actionable /ˈæk.ʃə.nə.bəl/, periphery /pəˈɹɪf.ə.ɹi/, organism /ˈɔɹ.ɡəˌnɪz.əm/
วิธีฝึกกับวิดีโอนี้
- ฟังวิดีโอให้จบหนึ่งรอบโดยยังไม่ต้องพูด แล้วจดคำที่ยังไม่รู้จัก
- เริ่มที่ความเร็ว 0.75× พูดตามทีละประโยค แล้วกลับไปใช้ความเร็วปกติเมื่อเริ่มคล่อง
- อัดเสียงตัวเองแล้วเทียบกับต้นฉบับ โดยสังเกตคำอย่าง dopamine, serotonin, omega เป็นพิเศษ
เทคนิค Shadowing คืออะไร?
Shadowing เป็นเทคนิคการเรียนรู้ภาษาที่ได้รับการรับรองทางวิทยาศาสตร์ พัฒนาขึ้นสำหรับการฝึกนักแปลมืออาชีพ วิธีการนี้เรียบง่ายแต่ทรงพลัง: คุณฟังเสียงภาษาอังกฤษจากเจ้าของภาษาและพูดตามทันที — เหมือนเงาที่ตามผู้พูดด้วยช่วงเวลาห่าง 1-2 วินาที การวิจัยแสดงว่าเทคนิคนี้ปรับปรุงความแม่นยำในการออกเสียง ทำนองเสียง จังหวะ การเชื่อมเสียง การฟังเข้าใจ และความคล่องแคล่วในการพูดได้อย่างมีนัยสำคัญ