Going gray in your 20s? Your diet-not just your genes-could be part of the reason. While genetics remains the biggest factor behind premature graying, growing research suggests that certain vitamin and mineral deficiencies may also contribute to the loss of natural hair color. The findings were published in the International Journal of Trichology.
Among the nutrients attracting the most attention is vitamin B12. Studies have found that people with premature graying often have significantly lower blood levels of vitamin B12 than those whose hair retains its natural pigment. Research has also shown that about 55% of people with pernicious anemia-a condition that prevents proper vitamin B12 absorption-develop gray hair before the age of 50, compared with around 30% of people without the condition.
Vitamin B12 is not the only nutrient under investigation. Researchers have also linked lower vitamin D and calcium levels with premature graying. A case-control study conducted in India reported that people with early gray hair were more likely to have deficiencies in both nutrients, although genetic factors also played an important role.
Copper may also influence hair pigmentation because it is required to produce tyrosinase, the enzyme responsible for making melanin, the pigment that gives hair its color. Low folic acid levels have similarly been associated with premature graying, while evidence linking copper deficiency remains less consistent. Iron has also been investigated due to its role in melanin production, but studies have produced mixed results.
Experts emphasize that premature graying is a complex condition influenced by multiple factors, including genetics, oxidative stress, thyroid disorders, autoimmune diseases, smoking, and nutrition. Although vitamin and mineral deficiencies are unlikely to be the sole cause, correcting deficiencies may help support healthy hair pigmentation in some individuals.
People experiencing unusually early graying are encouraged to consult a healthcare professional rather than self-prescribing supplements, as proper testing can identify underlying nutritional or medical conditions.
REFERENCE: Chakrabarty, Swagata; Krishnappa, Prafulla G; Gowda, Dinesh G; Hiremath, Jyothi. Factors Associated with Premature Hair Graying in a Young Indian Population. International Journal of Trichology 8(1):p 11-14, Jan–Mar 2016. | DOI: 10.4103/0974-7753.179384
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