A Chicago area elementary school suddenly reported five times the national average incidence of leukemia . All but one of the afflicted children were being taught in rooms where teachers kept the blinds drawn and the children were exposed all day to fluorescent light. The cells in the retina of your eyes will not divide and regenerate without a small amount of ultraviolet light. They also had significantly greater tumor development. This finding, confirmed at six major medical centers, is ignored by the tunnel-visioned National Cancer Institute and American Cancer Society.
Full daylight helps endurance, too.
Without them, he ran the course in six minutes less time and exclaimed that half way through, he felt as though he had just started. If those wavelengths are missing in the artificial light source a person is exposed to, then the nutritional benefits of the substance will not be utilized. UV functions as a nutrient and as a co-factor in body utilization of other nutrients. Exposed to full spectrum light, a father rat is docile and even helpful after his babies are born. And occasionally on a sunny day, I strip to the waist for two to three hours without sunscreen.