White hair at 20. What's going on?

20 years old appeared white hair, and this year a lot more and more on both sides may be caused by kidney deficiency internal heat phenomenon. Patients with kidney deficiency and internal heat will lead to insufficient blood circulation secretion, a long time will be reflected in the body surface white hair phenomenon. Patients in peacetime must eat more Ziyin kidney food, such as black sesame, black rice and black beans.