Recently, Dr. Stephanie Seneff, a senior scientist at MIT was quoted in an article by Dr. Joseph Mercola, entitled “How Can Sunscreen Cause Alzheimer’s?” Seneff, a senior scientist at MIT who has a wealth of information about the importance of sulfur, explains:
“… depletion of sulfate supply to the brain is another important contributor to Alzheimer’s, and I further think that sulfate is supplied to the brain principally by sterol sulfates like cholesterol sulfate as well as their derivatives like vitamin D3 sulfate. Both cholesterol sulfate and vitamin D3 sulfate are synthesized in the skin upon exposure to sunlight, and it is theorized that the skin is the major supplier of these nutrients to the body. This is why I believe that excess sunscreen use and excess sun avoidance are another principal causative factor in Alzheimer’s disease.”¹

The argument for safe sun exposure for overall health is a growing one. The question is how much sun is too much?
SkinHealth Technology has developed a patented, new sensor that helps enable the user to get sun without damage to the skin.

The Natural Vitamin D UV Activation Sensors take the guess work out of gauging the real-time intensity of UV light and answers the universal “how long should you stay in the sun without sun protection” question.

1) http://articles.mercola.com/sites/articles/archive/2012/03/03/sun-screens-cause-alzheimers.aspx