Can protein deficiency cause hair loss?
Yes, protein deficiency can contribute to hair loss. When protein intake is insufficient, the body may shift hair follicles into a resting phase, leading to increased shedding, typically two to three months after protein intake decreases. Hair is primarily composed of keratin, a protein formed from amino acids, so inadequate protein intake may affect hair structure and regrowth.
Key points:
- Hair loss related to protein deficiency often presents as diffuse thinning rather than localised hair loss.
- Protein deficiency is uncommon in the UK and other developed countries, but may occur with restrictive diets or inadequate intake.
- Hair loss associated with low protein intake is usually reversible once adequate protein intake is restored.
- This type of hair loss is not driven by hormonal factors and is managed by addressing dietary intake.
This text has been fact-checked for accuracy by Sorin Romaniuc, Pharmacist at medino.