7 ms·
Anecdotally, whenever I go swimming with my kids in the summer, and I don't put sunscreen on right away, but let myself get some intense direct sun, I feel good
by aantix 2mo ago
Anecdotally, whenever I go swimming with my kids in the summer, and I don't put sunscreen on right away, but let myself get some intense direct sun, I feel good and sleep really well that night.
As long as I don't let myself get in a red, sunburn situation.
- ThrowawayTestr 2mo agoVitamin D deficiency
- GlickWick 2mo agoDefinitely not. Vitamin D takes a while to synthesize and build up. A quick fix like this isn't possible.
- pixel_popping 2mo agoIt's just that getting sun is healthy (in moderation) and our body reward us, we have this new anti-sun obsession which is likely to cause many health (and mental health) issues
- GlickWick 2mo agoI don't think it's that simple, and making it seem that way is counter-productive towards understanding what we should/shouldn't be doing. There's no anti-sun obsession, either. Sunscreen isn't anti-sun, and people are well aware that Vitamin D synthesis is an issue in farther northern/southern latitudes. There's definitely an increased recognition scientifically that excessive sun is extremely bad, though.
- pixel_popping 2mo agoI would assume that many are taking Vitamin D, but there is still a major difference, if I spend few days no-lifing and I suddenly go out in the hot sun and comeback home 30min later, I feel much better, something happens internally, could be from the light itself, unsure, but I'd say for example to fight off depression, getting under the sun is quite powerful and will definitely improve your chances of getting out of it. I let my 2-year old child (she is also taking Vit D - 300iu a day) under the sun in the garden quite a lot on/off (I'd say probably 1h a day in total) and I find that she sleeps much better and is more calm in the evening as well, I can't say the same if we do an outing to the mall, something is clearly different/rewarding.
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- bob1029 2mo agoI can spend a solid hour in the sun before I start to burn, assuming I have a hat on my head. I've also noticed some correlation between my diet and how fast I burn. Whenever my metabolism is running at/near ketogenesis, it seems like it takes a lot longer for the sun to affect me.
- Ralfp 2mo agoYes, some stuff make your skin more sensitive to light than others. For example, you should avoid vitamin A creams and some herbs during summer because they increase risk of permanent skin discoloration.
- pazimzadeh 2mo agoWhich herbs
- butvacuum 2mo agoalso: citrus- wash your hands after.
- IshKebab 2mo agoJust so you know, burning & cancer isn't the only reason to avoid strong sunlight - it also causes skin aging (i.e. wrinkles). If you don't want to be super wrinkly when you're old, wear suncream!
- causalmodels 2mo agoWhen we were dating, the first thing my now wife did was get me on a regimin of sunscreen and tretinoin. I now have significantly fewer wrinkles than my younger siblings (2-3 years).
- emmelaich 2mo agoI'd be wary of that! Tretinoin has been linked to birth defects in women and they are warned against it. I wouldn't trust it for the father either.
- krrrh 2mo agoThe number one reason I wear an Apple Watch all summer is the UV index complication. If the number is at 4 and trending down I let the kids run free.
- pazimzadeh 2mo agoInterestingly the best time to go out is at solar noon, when the UVB/UVA ratio is higher. Just go for a shorter amount of time to compensate for the higher overall intensity.
- Rnonymous 2mo agoCare to explain? Isn't UVB more harmful than UVA?
- pazimzadeh 2mo agoNo, UVA is stronger and more harmful. UVA penetrates deeper in the skin, since it's stronger. UVB stimulates Vitamin D production, while UVA doesn't. So almost anything that is "UV-blocking" (sunscreen, UV-treated glass) gets rid of all of the beneficial UVB before UVA starts getting reduced. So you are actually enriching your exposure to the most harmful UV type, and not making Vitamin D. This might explain the paradoxical finding that people who use sunscreen more can have higher rates of skin cancer https://pmc.ncbi.nlm.nih.gov/articles/PMC10840669 https://pmc.ncbi.nlm.nih.gov/articles/PMC10840669
- miladyincontrol 2mo agoConfounding by indication. People who spend more time outdoors are more likely to try to wear sunscreen, as are people who already got a lot of pre-existing risk to excessive sun exposure. Key word on try as its greatly assuming there isnt a wide audience who do use sunscreen, then just apply it in poor amount, or never re-apply but enjoy staying out far longer than most do in the sun feeling they're oh so very protected. Spray sunscreens for example are just about useless, as are those solid stick applicators. They only get a fraction the amount you need for the rated protection. The biggest issue with sunscreen relates to companies selling sub par "convenience" slop, often right beside their other products some of which might actually be half decent.
- brightball 2mo agoI typically do the same thing. I only wear sunscreen if I am planning on being in direct sun for an extended period of time where I can't easily get back in the shade. The more you're able to build up a base tan the less you need it to avoid a burn at least.
- JoshGlazebrook 2mo agoSo we're just out here perpetuating myths on here now as well?
- brightball 2mo agoCorrection - The less you need it to avoid a burn.
- NikolaNovak 2mo agoIsn't tanning basically body's reaction to cellular damage? It reduces further damage but that's due to damage done? (It's largely irrelevant to myself, I pretty much burn immediately and don't / can't really tan, but my wife and her family tan well).
- brightball 2mo ago30 years ago I was a lifeguard and got to experiment with this some. I can't tell you the biology specifically, but I have always tanned quickly. The less tan I am, the more easily I burn. Always been that way for me at least.
- worldsavior 2mo agoThe damage gets healed at sleep. Tanning reduces the need to heal.
- HedonicEscal8r 2mo agoYes, tanning is downstream of the activity of the p53 tumor suppressor protein in response to UVB-induced damage: https://www.lesswrong.com/posts/EFiCGc3YwadZBzvZ3/contra-byrnes-on-uv-and-cancer https://www.lesswrong.com/posts/EFiCGc3YwadZBzvZ3/contra-byr...
- milesvp 2mo agoMost likely that’s the nitric oxide (not to be confused with nitrous oxide) that is a biproduct of vitamin d synthesis which requires UV light. It is a natural muscle relaxer and is generally considered good for blood pressure and heart health in general.
- porridgeraisin 2mo agoNutri oxide production is triggered by UVA, vit d which happens due to UVB.
- KetoManx64 2mo agoVitamin D levels are directly tied to melatonin production, that's why the less sun you get the worse your sleep gets. Vitamin D also lowers inflamation throughout the body.