Epidemiologic studies suggest that a higher dietary intake of calcium and vitamin D, and/or sunlight-induced vitamin D synthesis, correlates with lower incidence of cancer, including lymphoma, breast, prostate, and colon cancer.1 In fact, for over 60 years, researchers have observed an inverse association between sun exposure and cancer mortality,2 and those with more sun exposure had fewer cancers.Speaking of sun exposure—it’s important! Trust the facts. Being a mole-person is not a good idea. Get some sun, and, check out this study in the NewScientist. Sun-drenched populations are more protected against cancer. Andy Coghlan reports:
Sunshine is regularly blamed for causing fatal skin cancers, but it may help save your life if you develop a different cancer. It seems that sunlight has an overall protective effect as it stimulates the body's production of vitamin D, which helps to combat internal cancers, including those of the colon and prostate.Now, in case you’re curious or you forgot. Here Dr. Fuhrman explains just what makes sunlight so special. More reason to go into the light:
"A little sun exposure is a little better for you than avoiding sunlight," says Richard Setlow of Brookhaven National Laboratory in Upton, New York, who co-led the new work. "Vitamin D doesn't lower the incidence of internal cancers, but it prevents more people dying from them."
Vitamin D is a fat-soluble vitamin that your body makes after exposure to ultraviolet (UV) rays from the sun. Vitamin D functions as a hormone because it sends a message to the intestines to increase the absorption of calcium and phosphorus.For a long time I used to be a cave-dweller. I’d stay indoors all the time and hardly ever go outside. Not anymore. Now I drag my butt outside fairly often. How about you?
1. Martinez ME, Willett WC. Calcium, vitamin D, and colorectal cancer: a review of the epidemiologic evidence. Cancer Epidemiol Biomark Prev 1998;7:163-68. Lieberman DA, Prindiville S, Weiss DG, Willett W. Risk factors for advanced colonic neoplasia and hyperplastic polyps in asymptomatic individuals. J Am Med Assoc 2003; 290:2959-67.
2. Heaney RP. Long-latency deficiency disease: insights from calcium and vitamin D. Am J Clin Nutr 2003;78:912-9.