The assumption in these articles is that sun exposure is dangerous and that we should protect ourselves from it. That assumption is not correct. Did you realize that a study has shown that sun deprivation may lead to 330,000 deaths per year? Here are some of the reasons why this is true:

Did you realize that children who have the greatest sun exposure have a profoundly reduced risk of breast and prostate cancer as adults? Did you realize also that Australian sunscreen use increases each year, and melanoma rises in lockstep? Sun exposure is absolutely for optimal human health. Here are a few more facts about the healthful effects of sun exposure.
•A 20-year Swedish study shows that sun avoidance is as bad for the health as cigarette smoking.
•A Spanish study shows that women who seek the sun have one-eleventh the hip fracture risk as those who avoid sun.
•Men who work outdoors have half the risk of melanoma as those who work indoors.
•Women who totally avoid the sun have 10-times the risk of breast cancer as those who embrace the sun.
•Women who sunbathe regularly have half the risk of death during a 20-year period compared to those who stay indoors.
•Sun exposure increases nitric oxide production, which leads to a decrease in heart attack risk.
•Vitamin D, the sunshine vitamin, is essential to human survival, and sun exposure is the only natural way to obtain it. Sunbathing can produce 20,000 units of vitamin D in 20 minutes of whole-body exposure.
•Sun exposure dramatically improves mood through the production of serotonin and endorphin.
•Beyond vitamin D, sun exposure also stimulates the production of endorphin, nitric oxide and BDNF, all of which are vital to human health.