Why do hair becomes white in young age?

Hair turns white at a young age primarily due to a decrease in melanin production, the pigment responsible for hair color. This reduction can be influenced by genetic factors, stress, nutritional deficiencies, or certain medical conditions. In some cases, autoimmune disorders can also cause premature graying by affecting the hair follicles. While it's more common with aging, these factors can lead to early onset of white or gray hair.