Why do you always have gray hair?

1. Unbalanced nutrition intake in the body: Due to the busy work of modern people, they often eat instant noodles and other fast food without nutrition. Over time, the nutrition intake in the body will be unbalanced, so they cannot supply the nutrients needed by the hair, resulting in the inability to produce melanin to supply hair, resulting in the phenomenon of always growing white hair. 2. Mental instability: Due to excessive pressure, often stay up late, leading to nervous dysfunction of the body, hindering the secretion of melanin function, leading to always white hair. 3. Kidney deficiency: If kidney function is not good, it will also lead to old white hair.