Translations. 1  Arabic: please add this translation if you can. 2  Armenian: please add this translation if you can. 3  Chinese: Mandarin: æ²ç² (zh), æç² (zh) (pÅ«fÄn), æ»ç³ç² (zh) (huÃ¡shÃ­fÄn), ç½èº«ç² (zh) (shuÇngshÄnfÄn)  Esperanto: please add this translation if you 1  can. Finnish: talkkijauhe.  Italian: borotalco (it) m, talco (it) m.
1 Protect your hands when it's cold outside to keep your nails from getting brittle and give them the chance to grow long.  Get plenty of sun, even in the winter, since the sun helps your body create the vitamin D your nails need to grow faster.
The only proven benefit of vitamin D is its role in helping calcium build strong bones. But that's far from the whole story. Vitamin D helps regulate the immune system and the neuromuscular system. Vitamin D also plays major roles in the life cycle of human cells. Vitamin D is so important that your body makes it by itself -- but only after skin exposure to sufficient sunlight. This is a problem for people in northern climates.