Taking vitamin B-12 can help prevent or reverse hair from graying. However, this is only effective if the cause of the graying is a result of a vitamin B-12 deficiencies that led to problems arising in the pituitary or thyroid glands, according to WebMD. Graying hair can also be due to numerous other factors, such as genetics.
The graying of hair may also be a result of the body's inability to absorb vitamin B-12. Getting a thorough diagnoses from a physician can help patients determine whether taking vitamin supplements may be an effective solution for their problems.
Why Does Hair Gray?
Hair will become gray overtime due to the body's inability to produce pigments in the hair follicles. In addition, hydrogen peroxide is a naturally occurring chemical that may build up in the hair follicles and eventually bleach them. Each strand of hair grows for approximately one to three years before they are shed by the body. The eventual discoloration takes time.
Who Is Vulnerable to Graying Hair?
Hair graying is a natural process of life. Most Caucasians can expect their hair to gray in their mid-30s, Asians in their late 30s and African Americans in their mid-40s. Half of the population will have gray hair by the time that they reach 50 years of age.