[arcticbull]

I mean, they would be the ones I'd expect to be the most sensitive to the negative impacts of UV radiation, right? The acute effects of UV tend to be worse on people who are (a) lighter skinned and (b) get less exposure in general.

I would actually expect the biggest positive impacts would be to darker-skinned people who live in higher latitudes with more time spent inside (as melanin protects you from the UV radiation, so you see higher rates of, e.g. vitamin D insufficiency).

There's three major pathways for health benefits from sun exposure.

1. UVB radiation stimulates the synthesis of vitamin D3.

2. UVA radiation stimulates the release of nitric oxide. This reduces your blood pressure and improves markers of cardiovascular health.

3. You're outside getting physical activity.

[edit] Also note that melanoma survival rates are much better for people who get more time in the sun.

[1] https://academic.oup.com/jnci/article/97/3/195/2544082