According to researchers, the widespread use of sunscreens promoted by dermatologists and the cancer industry may lead to a significant decrease in solar-induced pre-vitamin D3 in the skin, which actually correlates with a higher risk of cancer.Why Do Dermatologists Promote Sunscreen?Quite simply because they like repeat business. Exposure to ultraviolet B radiation in sunlight provides the mechanism for more than 90% of the vitamin D production in most individuals and they know it.
Our interaction with the sun is the one thing that may prevent cancer more than anything else.
A study in the American Journal of Epidemiology, showed that women who had at least 21 hours a week exposure to the sun’s UV rays in their teens were 29 percent less likely to get cancer than those getting under an hour a day. For women who spent the most time out side in their forties and fifties, the risk fell by 26 percent and for those above 60, sunshine halved their chances of a tumor