[decimon]

darker skin absorbs less sunlight???

From all I've read, yes.

[aruanan]

darker skin absorbs less sunlight???

From all I've read, yes.

True. The darker skin protects against UV. If you've got darker skin and live at a latitude where insolation is less, you're that much less likely to get enough sunlight to produce adequate vitamin D. However, you need something like 10 to 20 minutes on your arms to get enough vitamin D synthesized. How many people, except in the summer, get this now?