99 citations,
June 2005 in “Journal of Cosmetic Dermatology” Hair ages due to genetics and environmental factors, leading to graying and thinning, with treatments available for some conditions.
September 2014 in “Springer eBooks” Aging causes hair to gray and thin, with the timing of graying varying by race, and factors like oxidative stress and genetics can lead to hair loss.
January 2014 in “International Journal of Trichology” Hair changes are common in AIDS patients and can add to their financial and emotional stress.
Good nutrition may help prevent premature hair graying.
12 citations,
May 2018 in “JAAD Case Reports” A man's gray hair got darker and thicker after using a psoriasis drug.