Biotin Deficiency Can Cause Hair Loss

Different medical conditions and drugs can cause biotin deficiency and lead to hair loss.

Inherited genetics is considered a primary cause of biotin deficiency, but other conditions or activities can result in biotin levels low enough to trigger hair loss. Clinical studies suggest that pregnancy itself is associated with insufficient biotin levels, and hormone changes post-delivery can lead to 30-40% loss of scalp hair in some women. Long-term nursing has also been associated with biotin and other nutritional deficiencies and chronic hair thinning.4, 20

Studies show that treating the underlying biotin deficiency with biotin may reverse or improve hair loss:20

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Surgery that removes parts of the pancreas, stomach, and small intestine.23
Areas of the small intestine closer to the stomach.6, 23