What Causes Gray Hair?

Lack Of Vitamin B12

While gray hair is usually the result of a natural aging process, hair color can be affected by diet. A lack of vitamin B12 can potentially cause graying hair along with other symptoms like lack of energy, difficulty concentrating, bleeding gums, and pale skin. A vitamin B12 deficiency is an uncommon but reversible cause of gray hair. If individuals suspect their premature grays are caused by a vitamin deficiency, consuming more foods rich in B12 can reverse the graying. Many foods offer a good source of vitamin B12, but most are animal food sources such as shellfish, salmon, tuna, lamb, beef, eggs, milk, and yogurt.