Shadowing Practice: Vitamin D Testing Challenges - Learn English Speaking with Video
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so in this video i want to touch on vitamin d testing challenges okay the big the big problem with vitamin d is that there's no agreed upon value of what you should have in your
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blood i mean they have an idea or estimation and we can range all the way from this value right here to this value right here depending on what units you use could range from this value to this
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value i guess you can take an average of these numbers depending on what units you're measuring vitamin d from also the institute of medicine will tell you that you need between 600 to 800 IUS
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of vitamin d every day yet the endocrinology society will say you need a thousand to 200 IUS every day so again there's this there's not a lot of agreement on how much you need
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or how much should be in your blood a couple things i want to talk about that are very very important though there's two forms of vitamin d one is an inactive form 25 hydroxy vitamin d so it's like the precursor to the active
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form which is 125 dihydroxy vitamin d so this is the active form this is the inactive form the way this works and by the way most of the vitamin d in your blood is
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the pre-inactive version and many times what they're testing is they're testing 25 hydroxy vitamin d they're testing the
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precursor or the inactive vitamin d okay put that to the side we'll come back to it so what happens is you have the pre-vitamin d that goes through the body and goes
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through the liver and from the liver it then goes to the kidney the kidney is the primary site for conversion of the inactive to the active version of
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vitamin d what if there is damage to the kidney you're going to lose your conversion capacity and how many people have damage to the kidney well what damage is a kidney
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diabetes is a is a big thing but also insulin resistance what percentage of the population has insulin resistance i would say between
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65 to 75 of the entire population that is going to alter the ability for the kidney to convert the inactive to the active
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when you get your test back from the lab that says your 5-hydroxy vitamin d is within normal levels well what about the active form are you getting a 100 conversion by the kidney
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is there any problem with the kidney that's one variable it's very common to have people with a defect in the vitamin d receptors called polymorphism
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and even though you may have normal vitamin d in your blood it's not being activated because at the receptor level it's not working
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also if there's not enough bile in the body you won't get the conversion and if there's liver damage you won't be able to produce the bile to make the conversion
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if there's no gallbladder there you could be bile deficient so you're not going to have enough bile to make the conversion we already mentioned about insulin resistance if there's inflammation in the body that can lower your ability to convert vitamin d
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if there's malabsorption gut problems let's say you had a series of antibiotics as a child and that created scarring of your in your colon that can create a decreased capacity for conversion if
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you had a gastric bypass that could also alter your ability to convert vitamin d so as you can see there are many different variables so you have to look at the big picture what i tell people is to err on the side
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of taking more vitamin d than less and make sure you have enough bile so you can actually get the absorption all right i hope i didn't add more confusion but i wanted to clear
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up some of these variables and the point of this video was just to mention that just because this right here is normal doesn't necessarily mean it's being fully converted
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to the active form hey we're back with another amazing recipe no grains no sugar totally keto there's no
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suffering in keto absolutely not karen and it's an immune system builder absolutely you have to check this out i think you should hurry up watch the recipe and make it yourself it's just so easy
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to be keto but is it simple it's super simple we hope you enjoy making it as much as we are enjoying eating it
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Vocabulario y notas de pronunciación para esta lección
Esta lección de conversación de nivel B2 se basa en el vídeo “Vitamin D Testing Challenges”. Las palabras que más se repiten: vitamin, kidney, conversion, inactive, active. Este vídeo tiene 24 frases y 759 palabras para practicar shadowing. La parte hablada dura 4:58. El hablante habla a un ritmo natural de unas 153 palabras por minuto, cercano a una conversación cotidiana. Solo el 81 % de las palabras está entre las 3.000 más comunes del inglés, por lo que el vocabulario es exigente.
Vocabulario clave de este vídeo
Las 15 palabras más avanzadas del vídeo, con su pronunciación y significado:
| Palabra | Pronunciación | Significado |
|---|---|---|
| vitamin sustantivo | /ˈvɪt.ə.mɪn/ | vitamina, vitamínico |
| kidney sustantivo | /ˈkɪdni/ | riñón |
| inactive adjetivo | /ɪnˈæktɪv/ | inactivo |
| boil verbo | /bɔɪ(ə)l/ | hervir, herver |
| convert verbo | /kənˈvɝt/ | convertir |
| insulin sustantivo | /ˈɪnsəlɪn/ | insulina |
| variable adjetivo | [ˈvæɹ.i.ə.bl̩] | variable |
| precursor sustantivo | /pɹɪˈkɜː.sə/ | precursor |
| receptor sustantivo | /ɹɪˈsɛp.tə/ | receptor |
| altar sustantivo | /ˈɔl.tɚ/ | altar, ara |
| depend verbo | /dɪˈpɛnd/ | depender/pender (de), ser dependiente (de) |
| deficient adjetivo | /dɪˈfɪʃənt/ | deficiente |
| endocrinology sustantivo | /ˌɛn.də.kɹɪˈnɑ.lə.d͡ʒi/ | endocrinología |
| estimation sustantivo | /ˌɛs.təˈmeɪ.ʃən/ | valoración |
| gastric adjetivo | /ˈɡæstɹɪk/ | gástrico |
Phrasal verbs que vas a escuchar
| Palabra | Significado |
|---|---|
| go through verbo | atravesar |
Pronunciación a tener en cuenta
El hablante usa 12 contracciones y formas reducidas, como they're, you're, won't. Dilas en su forma corta, tal como las oyes.
- Los sonidos de “sh” y “zh”: deficient /dɪˈfɪʃənt/, estimation /ˌɛs.təˈmeɪ.ʃən/, absorption /æbˈsɔɹp.ʃn̩/, inflammation /ɪnfləˈmeɪ̯ʃən/, confusion /kənˈfjuːʒən/
- Palabras largas — cuida el acento: endocrinology /ˌɛn.də.kɹɪˈnɑ.lə.d͡ʒi/, estimation /ˌɛs.təˈmeɪ.ʃən/, polymorphism /pɑliˈmɔɹfɪz(ə)m/, antibiotic /ˌæn.taɪ.baɪˈɑ.tɪk/, inflammation /ɪnfləˈmeɪ̯ʃən/
Sonidos difíciles para hispanohablantes:
- /v/ — no es /b/: los dientes tocan el labio inferior: vitamin /ˈvɪt.ə.mɪn/, inactive /ɪnˈæktɪv/, convert /kənˈvɝt/, variable [ˈvæɹ.i.ə.bl̩], activate /ˈæktɪˌveɪt/
- /z/ — sonora, no /s/: polymorphism /pɑliˈmɔɹfɪz(ə)m/, diabetes /ˌdaɪəˈbiːtiːz/
Cómo practicar con este vídeo
- Escucha el vídeo entero una vez sin hablar y anota las palabras que no conoces.
- Empieza a velocidad 0,75×, haz shadowing frase por frase y vuelve a la velocidad normal cuando te resulte fácil.
- Grábate y compara con el original, prestando atención a palabras como vitamin, kidney, inactive.
¿Qué es la Técnica de Shadowing?
Shadowing es una técnica de aprendizaje de idiomas respaldada por la ciencia, desarrollada originalmente para la formación de intérpretes profesionales y popularizada por el políglota Dr. Alexander Arguelles. El método es simple pero poderoso: escuchas audio en inglés nativo y lo repites en voz alta de inmediato, como una sombra que sigue al hablante con solo 1-2 segundos de retraso. A diferencia de la escucha pasiva o los ejercicios de gramática, el shadowing obliga a tu cerebro y músculos de la boca a procesar y reproducir simultáneamente patrones de habla reales. Las investigaciones muestran que mejora significativamente la precisión de la pronunciación, la entonación, el ritmo, el habla conectada, la comprensión auditiva y la fluidez al hablar, convirtiéndola en una de las metodologías más efectivas para la preparación del IELTS Speaking y la comunicación en inglés en el mundo real.