2
High levels of vitamin D, decelerates the shortening of the telomeres and thus tend towards a higher lifetime. Besides, vitamin D is preventively also important for everyone (male) for prostate and colon cancer. Women with dark skin, however, produce less vitamin D in the sun. Hence, the impact is significantly lower with them. Beware, too much sun is also dangerous! (Source B. Richards, Kings College London in the American Journal of Clinical Nutrition).
I.G.  Gnostotheca 2641