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Is sunscreen the new margarine? (2019)

outsideonline.com

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Re: Is sunscreen the new margarine? (2019)

#41

Coming from the skin cancer capital of the world (Australia) - no, no it is not

Yeah, lack of Vitamin D may or may not be a problem (well, obviously in extreme cases it leads to rickets, but that's rare). But skin cancer unquestionably is a problem, and not infrequently a deadly one. Pick your battles.

Re: Is sunscreen the new margarine? (2019)

#42
post #24

Earlier quoted context omitted.

From the conclusions: > Sun radiation affects hair properties as color, luster, mechanical resistance, the content of proteins and others. TLDR Yes it impacts color. Further reading can be found in the 75 studies that can be found in the references section.

If hair greying was mostly caused by UV damage, I would expect that the pattern of greying would be even, and begin on the top of the head. In contrast (based on my own unscientific observations!) greying typically begins in small areas, and often on the temples - not what I'd expect if caused by UV damage.

Now I'm curious why it starts on the temples (it's where mine started too, then my fringe)

Re: Is sunscreen the new margarine? (2019)

#43
post #29

Earlier quoted context omitted.

A bit unclear - it says > Weller’s largest study yet is due to be published later in 2019 But in the header, it also says > Updated May 31, 2024 I'd still love to know whether there has been further research in the meantime.

And https://web.archive.org/web/20260000000000*/https://www.outs... seems to suggest 2021. I guess we'll put that above, although we had 2019 in the 2022 thread ( https://news.ycombinator.com/item?id=48715020 ) :)

It was published early 2019, maybe late 2018.

Searching for the title of the article ("Is sunscreen the new margarine?") makes it easy to pinpoint: there is a open letter responding to the article, dated January 15, 2019. https://www.asds.net/Portals/0/PDF/LetterToTheEditor-Outside...

Re: Is sunscreen the new margarine? (2019)

#45
I think this all stems from Baby boomers controlling the narrative. Baby boomers had an insane relationship with the sun. Getting crispy brown tan, using tanning oils, using that metal collar to blast sun directly into their face, and frequenting tanning beds were viewed as totally normal and healthy things.

Big surprise they all got skin cancer. Then they swung the pendulum all the way back and now preach 24/7 sunscreen and never letting the sun touch you.

Re: Is sunscreen the new margarine? (2019)

#46

I think this all stems from Baby boomers controlling the narrative. Baby boomers had an insane relationship with the sun. Getting crispy brown tan, using tanning oils, using that metal collar to blast sun directly into their face, and frequenting tanning beds were viewed as totally normal and healthy things. Big surprise they all got skin cancer. Then they swung the pendulum all the way back and now preach 24/7 sunsc…

The article doesn't make really controlled findings. There's an argument to be made that the increase to diseases isn't purely lack of vitamin D but lack of exercise.

Our ancestors got lots of Vit D but they also got lots of exercise while absorbing the sun.

I still don't think it's going to be wise to go out and just bake in the high UV of early afternoons but rather it's important to go outside early to mid morning or late afternoon and absorb some sun without copious amounts of sunblock.

Re: Is sunscreen the new margarine? (2019)

#47
post #5

So everything in moderation? Cool, glad my philosophy still applies.

Extreme tension leads to breakage. Something something in buddhism about not trying to put too much tension in a bow or it'll break. Also known as the middle way. Moderation is a great philosophy.

> something in buddhism about not trying to put too much tension in a bow or it'll break

Perhaps you are referencing AN 6.55 Sona Sutta.

https://www.accesstoinsight.org/tipitaka/an/an06/an06.055.th...

Re: Is sunscreen the new margarine? (2019)

#48
post #31

The article seems to be a meta analysis of a bunch of conflicting research to support a narrative that we don’t really know shit. And fair, we don’t. But a couple of things we do know that weren’t covered - egregiously so - is that aging is UV damage. Sometimes called photoaging, wrinkles, sun spots, discoloration, fine lines, grey hair, all of that shit that you associate with someone visibly looking old is sun dama…

Pro golfers look a good 10-20 years older than their real age sometimes fwiw. In contrast to most other pro athletes in indoor disciplines who generally look better than their age. There's also examples of truckers who spent most of their career with the window rolled down and you can tell straight up what side of the road they drove on.

I first took sun exposure seriously after backpacking and spending time with other young travellers in hostels. It was apparent who spent their time exposed to the sun, I remember a girl my age who was in the middle of a multi-year cycle tour, and although I envied her journey, her skin looked quite rough. I decided that if I ended up doing that, I'd get one of those cycle helmet brim visors and would probably just cover my face during a lot of the riding portions.

Then I met a man who did kayak tours of a city. He was awesome, but really leathery due to the 20 years in a boat without shade and having the UV reflections off the water. Your skin cancer risk is off the charts at that point.

Re: Is sunscreen the new margarine? (2019)

#49

I made a small little web app calculator for myself and my family to figure out how long we could stay outside without needing sunscreen based on current UV and skin type. I use it daily in the summer and a couple thousand people use it every month also. You can check it out at https://sunburntimer.com . It's also free and open source software, github link in footer.

This is awesome thank you for making this!
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