Originally Posted by Aus_MD
In evolutionary terms skin color is thought to be determined through a balance of selective pressures related to the harmful and beneficial effects of UV radiation. We "survived" in previous eras because our skin colour was appropriate to the latitudes in which we lived. We encounter problems now because we expose ourselves to more UVR than our skin was "designed" to cope with.
i'm aware of the evolutionary theories concering skin color, and they make sense. but i question that people should now be afraid of leaving their home without using spf.
there are many white people in latin america who never use spf, even people who work outside everyday, and as far as i know there is no epidemic of skin cancer down there. my father's side of the famiy has blue eyes and blonde hair. they are whiter than white, and i've never heard of anyone having skin problems. they only use sunscreen at the beach.