Gray Hair in Your 20s and What Usually Causes It

Gray hair in your 20s is common, and it often runs in families. Doctors usually call graying premature when it starts before 20 in white people, before 25 in Asian people or before 30 in people of African descent. In one survey of 6,390 men under 30, 25.3 percent reported premature graying.

What counts as early

Most people see their first gray hairs in their 30s or 40s, according to the American Academy of Dermatology (AAD). Graying well before that is called premature.

A 2013 review in the Indian Journal of Dermatology, Venereology and Leprology gives these cutoffs: before 20 in white people, before 25 in Asian people and before 30 in people of African descent. Cleveland Clinic uses a simpler version: before 20 if you have light skin and before 30 if you have dark skin. A 2018 review in the International Journal of Trichology points out that a clear cutoff for Asian populations is still lacking.

So a few gray hairs at 26 may count as premature for one person and not for another. Our page on when gray hair starts shows the usual ages by ancestry and sex.

How common it is

Two studies give a sense of scale. In a 2015 study published in the Journal of the American Academy of Dermatology, researchers surveyed 6,390 men younger than 30. Their average age was 20.2. Of those men, 25.3 percent reported premature graying. The study relied on questionnaires, so memory could affect the answers, and it did not include women.

A 2020 community study in Srinagar, in northern India, examined the scalps of 384 young adults aged 15 to 30. It found premature graying in 27.3 percent. The two studies were done in different places, with different methods, so their numbers are not directly comparable. Both show that early gray is common.

Family history is the clearest link

If your parents went gray early, your chance of doing the same is higher. Cleveland Clinic cites a study of people with premature graying in which nearly 40 percent had a family history of it. In the survey of 6,390 young men, a family history of early graying was much more strongly linked to it than obesity or smoking. The Srinagar study found that both a father's and a mother's history of early graying predicted it.

The 2013 review adds that premature graying can be inherited as an autosomal dominant condition, which means one copy of a gene variant from one parent is enough. Our page on genetics and gray hair explains what is known about the genes involved, and why they do not tell the whole story.

Other things linked to early graying

Research has found several other links. These are associations, which means they show up together, not proof that one causes the other.

Factor	What research found
Smoking	In a survey of 207 adults in Jordan, smokers were two and a half times more likely to go gray before 30. Smoking was also linked in the survey of young men and in the Srinagar study.
Low vitamin B12 or iron	Cleveland Clinic says lower levels of both are linked to premature graying.
Pernicious anemia, which leads to low B12	A 2018 review reports that 55 percent of people with it went gray before 50, compared with 30 percent without it.
Low thyroid hormone	The 2018 review lists it as a cause of premature graying.
Obesity	Linked to early graying in the survey of young men.
Vitiligo and alopecia areata	Cleveland Clinic says these conditions can leave hair gray or white.

What about stress?

Stress may also play a part. A 2020 study in mice, published in Nature, found that stress made nerves release norepinephrine, which used up the stem cells that supply pigment, and the hair that grew next was white. A 2021 study of 397 hairs from 14 people, aged 9 to 65, found graying that lined up with stressful periods. The human study was small, so it does not show how much stress adds to early graying. Our page on stress and gray hair covers both studies and their limits.

When to see a doctor

Early graying often runs in families, as the studies above show. Some signs are still worth checking with a doctor or dermatologist:

• Gray or white hair that appears suddenly.
• A single patch of white hair. DermNet, a dermatology resource, calls this poliosis and lists causes that include vitiligo and alopecia areata.
• Graying together with other new symptoms.

A doctor can look for causes such as low vitamin B12, iron or thyroid hormone. The AAD notes that a dermatologist can help when an underlying condition, such as a vitamin deficiency, may be affecting hair color. This post is general information and not medical advice.

What you can and cannot change

The AAD says premature graying is difficult to treat, and there are currently no effective medical treatments to add color back to hair. It lists habits that may delay graying, including not smoking, trying to manage stress, eating a balanced diet, getting enough sleep and protecting your hair from the sun. It also says these are temporary measures that will not fully prevent graying.

That leaves a personal choice about how you want your hair to look. If you want to cover the gray, our post on covering gray at home for the first time explains the basics. If you decide to keep it, caring for gray hair covers texture and styling. For the science behind all of this, read our guide on why hair turns gray.

LIUMIQ is a gradual color product for gray hair, still in development and not yet for sale. Join the waitlist if you would like to hear when there is news.