Health & bones and imMune system

Today, above latitude 42° N or above a line across Boston, Barcelona, Roma, Sapporo, about 70% of the adult population is deficient in Vitamin D from autumn to spring. Especially postmenopausal women, aged people, overweight people, people with dark skin, wearing very spanning clothes preventing the synthesis of vitamin D from UV rays, people who don’t expose themselves to the sun or just living in less sunny regions, breastfeeding women or vegetarians. Nevertheless Vitamin D is not only essential to healthy bones, muscles and teeth but also to maintain an optimal immune system.