Alopecia areata causes hair to fall out in big patches. The culprit is your own immune system, which attacks healthy hair follicles by mistake. In most cases, the damage isnât permanent. The missing locks should grow back in 6 months to a year. Some people lose all the hair on their scalp and body, but thatâs rare.
When it comes to building strong bones, there are two key nutrients: calcium and vitamin D. Calcium supports your bones and teeth structure, while vitamin D improves calcium absorption and bone growth.
Vitamin D strengthens bones because it helps the body absorb bone-building calcium. This vitamin is unique â your body manufactures it when you get sunlight on your skin! You can also get vitamin D from egg yolks, oily fish such as salmon, tuna, and sardines, and fortified foods like milk, soy milk, and orange juice. Teens need 15 micrograms (600 IU) of vitamin D from food or supplements every day.