January 2005 in “Digital Access to Scholarship at Harvard (DASH) (Harvard University)” The FDA struggles to regulate hair loss supplements due to a law allowing unproven claims.
67 citations
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January 2007 in “Environmental health perspectives” A woman's health issues were caused by arsenic poisoning from kelp supplements.
February 1999 in “Strength and Conditioning Journal” Androstenedione, a hormone supplement, doesn't improve muscle or performance and can cause harmful side effects.
19 citations
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January 2015 in “Current problems in dermatology” Ultraviolet rays damage hair, smoking may cause hair loss, and good nutrition is important for hair health, but genetics mainly decide hair thickness.
82 citations
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August 2017 in “Cell Reports” An imbalanced gut and lack of biotin can cause hair loss in mice.