Which vitamins are recommended for preventing hair loss?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Certain vitamins and micronutrients play a key role in preventing hair loss and supporting healthy hair growth. Vitamin D helps stimulate hair follicles, while biotin (vitamin B7) strengthens keratin, the protein that makes up hair. Other important nutrients include iron, zinc, vitamin E, and vitamin A, all of which support scalp health and follicle function. Deficiencies in these vitamins are commonly linked to thinning hair and shedding, so maintaining balanced levels through diet or supplementation may help prevent hair loss.

However, hair loss can have many underlying causes beyond nutrition, including hormonal imbalances, stress, medical conditions, or genetics. Guessing the cause can delay effective treatment. Take a free, instant, online symptom check to better understand what may be behind your hair loss and get clear guidance on your next steps.

Reviewed for medical accuracy: 07/15/2026

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Explanation

Hair loss can be caused by many things, and certain vitamins and minerals might help. Vitamin D is important for hair growth, and a lack of it might lead to hair loss. Biotin, also known as vitamin B7, is another vitamin that helps keep hair healthy.

Important Vitamins and Minerals:

Vitamin D: Helps hair grow and might prevent hair loss if you don't get enough.
Biotin (Vitamin B7): Keeps hair strong and healthy.
Other Micronutrients: Some other vitamins and minerals might also help, but more research is needed.

Eating a balanced diet with these vitamins can help keep your hair healthy. If you're experiencing unusual hair loss or want to understand what might be causing it, try Ubie's free AI symptom checker to get personalized insights in just a few minutes.

(References)

Almohanna HM, Ahmed AA, Tsatalis JP, & Tosti A. (2019). The Role of Vitamins and Minerals in Hair Loss: A Review. Dermatology and therapy, 30547302.
Saini K, & Mysore V. (2021). Role of vitamin D in hair loss: A short review. Journal of cosmetic dermatology, 34553483.
Wang R, Lin J, Liu Q, Wu W, Wu J, & Liu X. (2024). Micronutrients and Androgenetic Alopecia: A Systematic .... Molecular nutrition & food research, 39440586.

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