Mona Gohara Explains Grey Hair in 20s, Genetics and 50% by 50
Grey hair in your 20s is not unusual, and board-certified dermatologist Mona Gohara says the timing is often driven by genetics. Gray hair can show up in the 20s, sometimes in the late teens, when melanin production in hair follicles slows and pigment fades.
Gohara said, “Gray hair in your 20s can be influenced by genetics, meaning if your parents or grandparents grayed early, you’re more likely to as well.” She added, “Melanin production in hair follicles decreases over time.” By age 50, half of all men and women will have at least 50 percent gray hair.
Mona Gohara on early graying
There is no normal age to go gray, Gohara said, though most people begin to see gray hair in their mid-30s. She said early graying can appear in people who are under 20, and that gray hair at any age is largely genetic. The basic change is a loss of pigment; white hair has a total lack of pigment.
That pattern leaves one clear divide: many people gray because of family history, while others see the process move faster for different reasons. Gohara said oxidative stress, lifestyle factors and certain health conditions can accelerate the shift from colored hair to gray.
Vitamin B-12 and thyroid issues
Gohara said, “In some cases, vitamin B-12 deficiency, thyroid issues, or pituitary problems can lead to premature graying.” She also noted that a study of premature graying in people under 20 found lower copper levels in those affected.
For people worried that gray hair may reflect a medical issue, Gohara said they should see a professional who can diagnose and treat it properly. She said a diet rich in shellfish, seeds, nuts and fish may help if low copper is part of the picture.
Gray Hair and family history
The practical question for a 24-year-old, 28-year-old or 29-year-old spotting new gray strands is whether the change fits family history or points to something treatable. Gohara’s answer separates the two: genetics drive most cases, but vitamin B-12 deficiency, thyroid issues and pituitary problems are among the conditions that can speed graying.
For readers seeing gray hair earlier than expected, the useful next step is not guesswork. Gohara pointed to a medical check when a health problem may be involved, because the cause can sometimes be identified and treated rather than simply accepted as timing.
