Biotin (vitamin B7) is one of the most popular hair supplements — but the scientific truth is more complex than ads suggest.
Scientific Facts:
- True biotin deficiency is very rare: Abundant in food and produced by gut bacteria. True deficiency causes hair loss — but it's rare except in special cases.
- Supplements only help those with deficiency: No strong scientific evidence of benefit for those with normal levels.
- Doesn't treat androgenetic alopecia: Biotin doesn't block DHT effect.
When Biotin Is Helpful:
- Brittle breaking nails with hair loss.
- Very poor diet.
- After gastric surgery (malabsorption).
- Long-term use of antiepileptic drugs.
Important Warning:
High-dose biotin interferes with lab tests — gives false results for thyroid and cardiac hormones. Stop it 48 hours before any blood test.
At BEIT TARIQ Center, we test the real cause of your hair loss instead of relying on supplements you might not need.