Pratica di Shadowing: Does Aloe Really Treat a Sunburn? - Impara a parlare inglese con i video
Creazione lezione...
1
It’s advice as old as time: if you get a sunburn, start lathering on the Aloe Vera.
2
And when we say ‘old as time’, we mean it.
3
Humans have been using aloe vera medicinally for thousands of years.
4
But does the slimy gel actually have skin-healing properties?
5
Well, the research is surprisingly scarce, but it seems like it may help boost your skin’s natural healing process.
6
Sunburns themselves really aren’t all that different than burns from a campfire, a curling iron, or stepping on a George Foreman grill.
7
So studies looking at burn healing tend to lump them together.
8
And there is some evidence that applying the mucus innards from Aloe plants helps you heal faster after a burn.
9
A review from 2007 in the journal Burns found that in 127 burn victims, those who used aloe healed almost 9 days faster on average than those in control groups.
10
But what aloe actually does is a little less clear.
11
In general, there are three main concerns when treating burns: reducing pain, actually healing the wound, and preventing infection.
12
Aloe’s antibacterial and antifungal activities are well documented, so it might simply help because it keeps pesky microbes at bay.
13
But ask just about anyone who slathers on the aloe after a sunburn, and they’ll swear it’s an analgesic, meaning that it reduces pain.
14
And that might be because it reduces inflammation—your body’s immune response that makes things like sunburns all red and painful.
15
For example, an experiment in 1993 was able to isolate an enzyme in aloe that breaks down bradykinin, an inflammatory substance linked with pain.
16
But there’s not all that much clinical research on aloe pain-killing effects, so the jury is still out on whether they’re real, or it’s just acting as a placebo.
17
There’s a bit more evidence that it boosts skin healing.
18
Studies in rats have shown that aloe extract helps new skin cells move into burned areas, so they can rebuild the damaged tissue.
19
And the gooey gel in aloe vera contains a large amount of glucomannan, a fiber comprised mostly of the sugar mannose, which stimulates the production of fibroblastic growth factor.
20
It helps stimulate the formation of collagen and new blood vessels, which speed up how quickly the skin heals.
21
That said, human studies to date are kind of flimsy.
22
A 2012 Cochrane review noted that the few trials that have been conducted aren’t high quality—they’re all small, and their results are potentially biased by things the patients or caregivers knowing aloe was being used.
23
So, it might work, or it might just be that people think it’ll work.
24
And when it comes to your over the counter sunburn gel, it might not even be the aloe itself.
25
Researchers have found that it can speed up that absorption of vitamins and drugs through the skin.
26
So if your aloe gel also has things like Vitamin E, or some other anti-inflammatory drug, that substance gets into your skin faster.
27
But whether aloe works or not, I think we can all agree it’s just better to avoid needing it.
28
So if you’re going to spend some time in the sun this summer, maybe take steps to avoid overexposure instead of relying on aloe to soothe your beet-red skin afterwards.
29
Thanks to Joelle and Brianna Beecher for asking, and to all our patrons who voted for this question in our poll.
30
If you want to ask us questions like this and help decide which of them we answer, or just get a bunch of awesome rewards you can’t get anywhere else, you can head on over to Patreon.com/SciShow.
📺 Stesso Canale
C12
The Science Behind The Odyssey's Greatest Challenge
American AccentIELTS PrepTOEFL PrepUniversity Students
B23
What’s Ruining Our Ruins?
American AccentIELTS PrepTOEFL PrepUniversity Students
B21
Do Penguins Control the Weather?
American AccentIELTS PrepTOEFL PrepUniversity Students
C12
The Most Important Picture in the History of Science
American AccentIELTS PrepTOEFL PrepUniversity Students
C14
Why Do We Sneeze?
American AccentIELTS PrepTOEFL PrepUniversity Students
C13
Why Can’t We Have Unicorns?
American AccentKids
C1What's Really Behind The Adderall Shortage?
American AccentIELTS PrepTOEFL PrepUniversity Students
C1Ticks Can Spread An Allergy To… Red Meat?
American AccentIELTS PrepTOEFL PrepUniversity Students
C1The ONE Disease That Smoking Can Help Treat
American AccentIELTS PrepTOEFL PrepUniversity Students
C1How Onions ACTUALLY Make You Cry (And How to Stop Them)
American AccentDaily ConversationUniversity StudentsWorking Adults
✨ Video consigliato
B21
256 frasi
Medical Memes Doctors Actually Like
American AccentDaily ConversationUniversity StudentsWorking Adults
B213
138 frasi
The Skincare Step You’re Missing! All About Pre-Cleansing
American AccentBusiness EnglishDaily ConversationUniversity Students
B21
222 frasi
How Fire Made Us Human
Daily ConversationUniversity StudentsWorking Adults
B26
42 frasi
8 Foods That Boost Your Metabolism (Backed By Science)
Daily ConversationUniversity StudentsWorking Adults
B22
89 frasi
33K
Daily ConversationUniversity StudentsWorking Adults
B22
107 frasi
Tattoo Removal Is Insane
Daily ConversationUniversity StudentsWorking Adults
B13
56 frasi
Why Is My Butt So Itchy
Daily ConversationUniversity StudentsWorking Adults
B21
116 frasi
Why Sleep Is So Important - and What We’re Getting Wrong
Daily ConversationUniversity StudentsWorking Adults
B22
455 frasi
Skin: Multitalented and underappreciated | DW Documentary
Daily ConversationUniversity StudentsWorking Adults
B22
54 frasi
Could AI Become Too Powerful to Control?
Business EnglishDaily ConversationHigh School Students
B22
39 frasi
Why Does Heartbreak Hurt So Much?
Daily ConversationUniversity StudentsWorking Adults
B2226 frasi
Feeding Bill Gates a Fake Burger (to save the world)
American AccentBusiness EnglishDaily ConversationUniversity Students
Vocabolario e note di pronuncia per questa lezione
Questo video contiene 30 frasi e 604 parole da ripetere con lo shadowing. Il parlato dura 3:21. Chi parla va veloce, circa 181 parole al minuto: aspettati suoni legati e ridotti. Solo il 77% delle parole rientra nelle 3.000 più comuni dell’inglese, quindi il lessico è impegnativo.
Vocaboli chiave di questo video
15 parole del video che vale la pena imparare, con pronuncia e significato:
| Parola | Pronuncia | Significato |
|---|---|---|
| heal verbo | /ˈhiːl/ | guarire, sanare |
| boost verbo | /buːst/ | incrementare, potenziare |
| substance sostantivo | /ˈsʌbstəns/ | sostanza |
| inflammatory aggettivo | /ɪnˈflæmət(ə)ɹi/ | infiammatorio |
| stimulate verbo | /ˈstɪm.jəˌleɪt/ | stimolare |
| afterwards avverbio | /ˈæf.tɚ.wɚdz/ | dopo, poi |
| potentially avverbio | /pəˈtɛnʃ(ə)li/ | potenzialmente |
| experiment sostantivo | /ɪkˈspɛɹ.ə.mənt/ | esperimento |
| poll sostantivo | /poʊl/ | sondaggio |
| infection sostantivo | /ɪnˈfɛkʃən/ | infezione |
| reward sostantivo | /ɹɪˈwɔɹd/ | ricompensa |
| painful aggettivo | /ˈpeɪn.fl̩/ | doloroso |
| tissue sostantivo | /ˈtɪʃ.(j)u/ | tessuto |
| rely verbo | /ɹɪˈlaɪ/ | fare affidamento, basarsi |
| vessel sostantivo | /ˈvɛsəl/ | vascello, imbarcazione |
I phrasal verb che sentirai
| Parola | Pronuncia | Significato |
|---|---|---|
| speed up verbo | /spiːdˈʌp/ | stringere i tempi |
Pronuncia a cui fare attenzione
Chi parla usa 8 contrazioni e forme ridotte, come aren't, they're, can't. Pronunciale nella forma breve, così come le senti.
- I suoni “th”: lather /ˈlæð.ɚ/, slather /ˈslæðə(ɹ)/, soothe /suːð/
- I suoni “sh” e “zh”: potentially /pəˈtɛnʃ(ə)li/, infection /ɪnˈfɛkʃən/, tissue /ˈtɪʃ.(j)u/, inflammation /ɪnfləˈmeɪ̯ʃən/, absorption /æbˈsɔɹp.ʃn̩/
- Parole lunghe — attenzione all’accento: inflammatory /ɪnˈflæmət(ə)ɹi/, potentially /pəˈtɛnʃ(ə)li/, experiment /ɪkˈspɛɹ.ə.mənt/, surprisingly /səˈpɹaɪzɪŋli/, inflammation /ɪnfləˈmeɪ̯ʃən/
Come esercitarsi con questo video
- Ascolta tutto il video una volta senza parlare e annota le parole che non conosci.
- Inizia a velocità 0,75×, fai shadowing frase per frase e torna alla velocità normale quando diventa facile.
- Registrati e confronta con l’originale, facendo attenzione a parole come heal, boost, substance.
La grammatica di questo video
Le strutture che chi parla usa di più, con le parole esatte del video:
| Struttura | Nel video |
|---|---|
| Present perfect have/has + participio passato — un’azione passata che conta ancora adesso | have shown · have been conducted · have found |
| Frasi relative who / which + frase — un’informazione in più su una persona o una cosa | those who used · anyone who slathers |
Cos'è la tecnica dello Shadowing?
Shadowing è una tecnica di apprendimento delle lingue supportata da studi scientifici, originariamente sviluppata per la formazione dei traduttori professionisti e resa popolare dal poliglotta Dr. Alexander Arguelles. Il metodo è semplice ma potente: ascolti un audio in inglese di madrelingua e lo ripeti immediatamente ad alta voce — come un'ombra che segue il parlante con un ritardo di solo 1–2 secondi. A differenza dell'ascolto passivo o degli esercizi di grammatica, lo shadowing costringe il tuo cervello e i muscoli della bocca a elaborare e riprodurre simultaneamente i modelli di discorso reale. La ricerca dimostra che migliora significativamente la precisione della pronuncia, l'intonazione, il ritmo, il discorso connesso, la comprensione dell'ascolto e la fluidità del parlato — rendendolo uno dei metodi più efficaci per la preparazione alla prova di speaking dell'IELTS e per la comunicazione reale in inglese.