Causes

Vitamins, minerals and hair loss: what matters

Iron, vitamin D, zinc, biotin and more: what a review of the research says about nutrients and hair loss, and why testing beats guessing.

Short answerVitamins and minerals play a role in normal hair follicle growth, and deficiencies may be a modifiable risk factor for hair loss. But the evidence for supplements in people who are not deficient is limited, and too much of some nutrients can harm hair. Test first, then correct real deficiencies with your doctor.

Why nutrients matter to follicles

Hair follicle matrix cells divide rapidly, so they are sensitive to nutrition. A review of vitamins A, B, C, D and E, iron, selenium and zinc concluded that micronutrients play an important, but not entirely clear, role in follicle development and immune function [1].

Deficiency versus supplements

The same review notes that deficiencies may be a modifiable risk factor in hair loss, and that large placebo-controlled trials are still needed to show whether supplementation helps people with both a deficiency and hair loss [1]. In other words, fixing a real deficiency makes sense; taking everything just in case does not.

More is not always better

Excess intake of some nutrients, such as vitamin A and selenium, has been linked to hair loss, which is another reason to avoid high-dose supplements without advice [1].

A sensible plan

If you are shedding, ask your doctor about blood tests such as iron studies, vitamin D and thyroid function. Eat regular meals with enough protein. Keep your scalp in good condition while you sort out the inside; at Folli-Heal Plus we look after the outside with a 15-step scalp programme, and we will suggest seeing a doctor if your history points that way.

Want a closer look at your scalp?

Folli-Heal Plus starts every course with a magnified scalp analysis at The Starling Mall, PJ. We explain what we see, then plan sessions with you.

Results vary from person to person.

FAQ

Should I take biotin for hair loss?

Biotin deficiency is uncommon, and evidence for biotin in people who are not deficient is limited [1]. High-dose biotin can also interfere with some lab tests, so tell your doctor if you take it.

Which blood tests are useful?

Doctors often check iron stores, vitamin D and thyroid function in people with diffuse shedding.

Can diet alone fix thinning?

Correcting a deficiency can help, but pattern hair loss has genetic and hormonal drivers that diet does not change.

References

  1. Almohanna HM, Ahmed AA, Tsatalis JP, Tosti A. The Role of Vitamins and Minerals in Hair Loss: A Review. Dermatol Ther (Heidelb). 2019;9(1):51-70. PubMed 30547302 · PMC6380979

This article is general information, not medical advice. If hair loss is sudden, patchy or comes with other symptoms, see a doctor.