What causes white hair and hair loss?

Premature graying and hair loss are generally caused by factors such as staying up late, irregular lifestyle, genetics, excessive stress, or kidney deficiency. In terms of diet, it is recommended to consume more black sesame seeds, black beans, walnuts, and similar foods. Extreme mental stress is a direct cause of gray hair, as it may trigger spasms in the blood vessels that nourish the hair, disrupt melanin secretion, and impair the synthesis and transport of pigment granules. Regular oral intake of Polygonum multiflorum (He Shou Wu) and ensuring adequate sleep can be beneficial.