Shadowing Practice: Does Aloe Really Treat a Sunburn? - Learn English Speaking with Video
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It’s advice as old as time: if you get a sunburn, start lathering on the Aloe Vera.
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And when we say ‘old as time’, we mean it.
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Humans have been using aloe vera medicinally for thousands of years.
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But does the slimy gel actually have skin-healing properties?
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Well, the research is surprisingly scarce, but it seems like it may help boost your skin’s natural healing process.
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Sunburns themselves really aren’t all that different than burns from a campfire, a curling iron, or stepping on a George Foreman grill.
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So studies looking at burn healing tend to lump them together.
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And there is some evidence that applying the mucus innards from Aloe plants helps you heal faster after a burn.
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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.
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But what aloe actually does is a little less clear.
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In general, there are three main concerns when treating burns: reducing pain, actually healing the wound, and preventing infection.
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Aloe’s antibacterial and antifungal activities are well documented, so it might simply help because it keeps pesky microbes at bay.
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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.
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And that might be because it reduces inflammation—your body’s immune response that makes things like sunburns all red and painful.
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For example, an experiment in 1993 was able to isolate an enzyme in aloe that breaks down bradykinin, an inflammatory substance linked with pain.
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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.
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There’s a bit more evidence that it boosts skin healing.
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Studies in rats have shown that aloe extract helps new skin cells move into burned areas, so they can rebuild the damaged tissue.
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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.
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It helps stimulate the formation of collagen and new blood vessels, which speed up how quickly the skin heals.
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That said, human studies to date are kind of flimsy.
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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.
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So, it might work, or it might just be that people think it’ll work.
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And when it comes to your over the counter sunburn gel, it might not even be the aloe itself.
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Researchers have found that it can speed up that absorption of vitamins and drugs through the skin.
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So if your aloe gel also has things like Vitamin E, or some other anti-inflammatory drug, that substance gets into your skin faster.
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But whether aloe works or not, I think we can all agree it’s just better to avoid needing it.
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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.
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Thanks to Joelle and Brianna Beecher for asking, and to all our patrons who voted for this question in our poll.
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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.
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Bu dersin kelimeleri ve konuşma notları
Bu videoda gölgeleme çalışması için 30 cümle ve 604 kelime var. Konuşma bölümü 3:21 sürüyor. Konuşmacı hızlı konuşuyor, dakikada yaklaşık 181 kelime; bu yüzden birbirine bağlanan ve zayıflayan sesler duyacaksınız. Kelimelerin yalnızca %77’i İngilizcede en sık kullanılan 3.000 kelime arasında, bu yüzden kelime dağarcığı zorlayıcı.
Bu videodaki önemli kelimeler
Videodan öğrenmeye değer 15 kelime, telaffuzu ve anlamıyla:
| Kelime | Telaffuz | Anlam |
|---|---|---|
| heal fiil | /ˈhiːl/ | iyileştirmek |
| substance isim | /ˈsʌbstəns/ | madde |
| afterwards zarf | /ˈæf.tɚ.wɚdz/ | sonradan, daha sonra |
| experiment isim | /ɪkˈspɛɹ.ə.mənt/ | deney (n), tecrübe |
| infection isim | /ɪnˈfɛkʃən/ | enfeksiyon |
| reward isim | /ɹɪˈwɔɹd/ | ödül, mükâfat |
| vessel isim | /ˈvɛsəl/ | tekne, gemi |
| bias isim | /ˈbaɪ.əs/ | yanlılık, ön yargı |
| rat isim | /ɹæt/ | sıçan, fare |
| surprisingly zarf | /səˈpɹaɪzɪŋli/ | şaşırtıcı bir şekilde, şaşırtıcı biçimde |
| extract isim | /ˈɛkstɹækt/ | ekstre |
| vitamin isim | /ˈvɪt.ə.mɪn/ | vitamin |
| researcher isim | /ˈɹiˌsɝ.t͡ʃɚ/ | araştırmacı, araştırıcı |
| enzyme isim | /ˈɛn.zaɪm/ | enzim |
| inflammation isim | /ɪnfləˈmeɪ̯ʃən/ | enflamasyon, iltihap |
Duyacağınız deyimsel fiiller
| Kelime | Telaffuz | Anlam |
|---|---|---|
| speed up fiil | /spiːdˈʌp/ | hızlanmak, hızlandırmak |
Dikkat edilecek telaffuzlar
Konuşmacı aren't, they're, can't gibi kısaltılmış biçimleri 8 kez kullanıyor. Bunları duyduğunuz gibi kısa söyleyin.
- “th” sesleri: lather /ˈlæð.ɚ/, slather /ˈslæðə(ɹ)/, soothe /suːð/
- “sh” ve “zh” sesleri: potentially /pəˈtɛnʃ(ə)li/, infection /ɪnˈfɛkʃən/, tissue /ˈtɪʃ.(j)u/, inflammation /ɪnfləˈmeɪ̯ʃən/, absorption /æbˈsɔɹp.ʃn̩/
- Uzun kelimeler — vurguyu doğru yere koyun: inflammatory /ɪnˈflæmət(ə)ɹi/, potentially /pəˈtɛnʃ(ə)li/, experiment /ɪkˈspɛɹ.ə.mənt/, surprisingly /səˈpɹaɪzɪŋli/, inflammation /ɪnfləˈmeɪ̯ʃən/
Bu videoyla nasıl çalışılır
- Videonun tamamını konuşmadan bir kez dinleyin ve bilmediğiniz kelimeleri not edin.
- 0,75× hızla başlayın, cümle cümle tekrar edin ve kolaylaşınca normal hıza dönün.
- Kendinizi kaydedin ve orijinaliyle karşılaştırın; heal, substance, afterwards gibi kelimelere özellikle dikkat edin.
Bu videodaki dil bilgisi
Konuşmacının en çok kullandığı yapılar, videodaki sözcüklerin aynısıyla:
| Yapı | Videoda |
|---|---|
| Present perfect have/has + fiilin üçüncü hâli — geçmişte olan ama şimdi de önemli olan bir eylem | have shown · have been conducted · have found |
| İlgi cümlecikleri who / which + cümle — bir kişi ya da şey hakkında ek bilgi | those who used · anyone who slathers |
Gölgeleme Tekniği Nedir?
Gölgeleme, başlangıçta profesyonel tercüman eğitimi için geliştirilen ve çok dilli Dr. Alexander Arguelles tarafından popüler hale getirilen, bilim destekli bir dil öğrenme tekniğidir. Yöntem basit ama güçlüdür: ana dili İngilizce olan bir sesi dinler ve hemen yüksek sesle tekrar edersiniz — konuşmacıyı 1-2 saniye gecikmeyle takip eden bir gölge gibi. Pasif dinleme veya dilbilgisi alıştırmalarının aksine, gölgeleme beyninizi ve ağız kaslarınızı gerçek konuşma kalıplarını eşzamanlı olarak işlemeye ve yeniden üretmeye zorlar. Araştırmalar, telaffuz doğruluğu, tonlama, ritim, bağlı konuşma, dinleme anlama ve konuşma akıcılığını önemli ölçüde geliştirdiğini göstermektedir — bu da onu IELTS Konuşma hazırlığı ve gerçek dünya İngilizce iletişimi için en etkili yöntemlerden biri yapar.