Although there is limited scientific evidence on whether supplements are useful for AGA (androgenetic alopecia), some ingredients may benefit hair health. Below we summarize information about the effectiveness of supplements against AGA.
1. Biotin (vitamin B7)
Effect
- Hair health: Biotin plays an important role in hair, skin and nail health. Biotin deficiency can lead to weak hair and hair loss [56†source].
- Scientific evidence: Some studies have shown that biotin may promote hair growth, but there is not enough evidence for a specific effect on AGA.
2. Iron
Effect
- Prevention of anemia: Iron helps oxygen transport in the blood and is important for maintaining hair health. Iron deficiency anemia can contribute to hair loss [56†source].
- scientific evidence: Iron supplements may improve hair loss, but research specific to AGA is limited.
3. Zinc
Effect
- Cell regeneration: Zinc is necessary for cell growth and repair and contributes to hair health. Zinc deficiency can cause hair loss [56†source].
- Scientific evidence: Zinc supplements may be effective for some patients with alopecia, but their effect on AGA is not clear.
4. Vitamin D
Effect
- Hair follicle health: Vitamin D is involved in hair follicle health, and vitamin D deficiency can be associated with hair loss [56†source].
- Scientific evidence: Vitamin D supplements may be effective against hair loss, but studies specific to AGA are limited [57†source].
5. Saw Palmetto
Effect
- DHT inhibition: Saw palmetto is a botanical ingredient that may inhibit the production of DHT (dihydrotestosterone). DHT is believed to be the main cause of AGA [55†source].
- Scientific evidence: Some studies indicate that saw palmetto may be effective against AGA, but results are inconsistent and further research is needed [56†source].
Summary
Supplements may support hair health, but there is limited scientific evidence regarding their specific effects on AGA. Medications such as finasteride and minoxidil are considered to be more effective in treating AGA. When using supplements, it is important to consult with your doctor to ensure safe and effective use.
References
- healthline: Hair Loss and Biotin
- WebMD: Hair Loss: Iron and Hair Loss
- Mayo Clinic: Hair Loss and Zinc
- American Society of Plastic Surgeons: Vitamin D and Hair Loss
- healthline: Saw Palmetto for Hair Loss
