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Comment by phito | Hacker News Reader

> for a species that evolved in the sun, I do not believe one bit that sun exposure, which incidentally is linked to many benefits because it’s so bloody normal, is something that can only be dealt with modern technology and we should be deathly afraid of it. Sure, UV radiation can cause mutations, but our immune system has evolved over billions of years to deal with this exact problem.

Yeah, most of the time our immune system deals with it, but sometimes it misses one roge cell and you've got cancer. That's why you want to limit your exposure to mutations even if you're somewhat adapted to deal with them.

Then it's a matter of looking at studies and statistics and deciding for yourself. Personally, I'll keep putting on sunscreen, as I sunburn easily ;)

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The important piece missing from both of these comments IMHO, is that sunburns are the problematic piece.

There's always going to be some risk from UV exposure, but as the parent comment points out we're evolved to deal with it and even to rely on it. There's research showing that low amounts of cellular damage is actually beneficial as it triggers cellular repair mechanisms or aptosis of senecent cells. Even here other commenters point out how exposure improved their skin or vision.

However that natural evolved state doesn't include sitting inside all week and then going outside on the weekend and getting completely toasted sunburnt!

Doing that and getting completely sunburnt overwhelms our normal cellular repair mechanism, the immune system response, etc. It's much more likely a rogue cell evades the immune system when it's swamped with such cells.

Personally I avoid sunscreen if possible for short excursions but will use it if going to the pool as I'm indoors more these years and paler.

> The important piece missing from both of these comments IMHO, is that sunburns are the problematic piece.

Then the problem is light skin tone, and the advice to wear sunscreen always, only applies to them, hence my doubts.

I do not get sunburnt if I go buy groceries or if I spend 1 hour outside, like most ethnicities on Earth; yet if I dare question the dogma of sunscreen, I get downvoted, which makes me wonder if it's at all rational. It boggles my mind how it has become a kind of innocent yet taboo argument on the (English-speaking) internet.

Just google it. I mean, there's plenty of articles that say you need to wear it even if you plan to stay indoors all day. WTF.

>> The important piece missing from both of these comments IMHO, is that sunburns are the problematic piece.

>Then the problem is light skin tone, and the advice to wear sunscreen always, only applies to them, hence my doubts.

My view: sunscreen for any skin is not healthy, lots of marketing there. People with sensitive skin to sunlight( generally light skinned folks but not always) should either avoid harsh sun of wear clothing that will protect them from harsh sunlight.

While we may be one species, there are very obvious differences between some ethnic groups and ancestral clusters.

Cancer is a parasite, the sun kills parasites.

Soap also kills parasites. And antibiotics!

Also bleach to cure corona.

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