Through the glass sun can not supplement calcium
Sun across the glass, there is no effect of calcium intake. This is because the role of the glass can absorb ultraviolet light, the sun is actually no effect across the glass. Therefore, experts recommend that people should go out in the sun in the fresh air sunny place. In addition, in terms of avoiding the sun two misperceptions. One is to take advantage of the sun to a little longer. This approach is wrong! No matter what the season, between 10:00 to 16:00, especially 12:00 to 16:00, very sensitive to the sun for a long time, so when the UV can cause skin damage. The second is to eat after the sun can promote nutrient absorption. It is also desirable approach. Do not eat before the sun mustard, lettuce, snails, shrimp, crabs, mussels and other photosensitivity food, so as to cause photosensitivity eruption or dermatitis.