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Comment by bob1029 | Hacker News Reader

I 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.

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Just 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!

When 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).

I'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.

This is a common misconception. Topical tretinoin has been shown to have no effect on the fetus. Oral tretinoins (like isotretinoin) have been linked to congenital defects. This is due to the differing rates of absorption and the resulting ability for the retinoid to cross the placenta at higher concentrations.

With that said, folks who are pregnant are discouraged from using any retinoids out of an abundance of caution.

Yes, 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.

Which herbs

also: citrus- wash your hands after.

I experienced similar reaction when i was doing keto. It became far more difficult to burn that summer

Why did you stop?

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