Protein-Rich Diet Shown to Improve Thinning Hair in Women

Increasing dietary protein can promote thicker, healthier hair, according to dermatologists and dietitians. A personal account from a long‑distance runner who raised her protein intake reported reduced shedding and visibly thicker strands. Experts cite research linking protein deficiency to telogen effluvium, a shedding condition, and emphasize that hair is composed mainly of keratin, a protein. They note that while supplements may aid nails, adequate protein is essential for follicle health and may be more effective than multivitamins alone.

The findings are supported by a 2021 review in the Journal of Clinical and Aesthetic Dermatology and a 2024 review in the International Journal of Trichology, which highlight the role of protein in hair growth cycles.