51 citations
,
November 2005 in “Journal of Medical Primatology” This study observed that hair loss in captive rhesus macaques varies with season, sex, and housing conditions, and is significantly correlated with HPA axis activity as indicated by faecal cortisol metabolites.
January 2026 in “Phaidra - Repository of the University of Veterinary Medicine, Vienna” In this study, researchers assessed cortisol levels in wolves by comparing hair and fecal samples and found a significant correlation, indicating that hair cortisol accurately reflects systemic levels, but season and body region affect results.
24 citations
,
April 2008 in “Fertility and sterility” In this study, pioglitazone treatment in insulin-resistant PCOS patients decreased relative 5alpha-reductase activity without significantly affecting cortisol levels or urinary cortisol excretion.
9 citations
,
November 1980 in “Geburtshilfe und Frauenheilkunde” In this study, prolonged intravenous Fenoterol infusion was associated with intensive hair growth in most patients, although hormonal changes typically linked to such effects were not observed.
5 citations
,
April 2022 in “Journal of Chromatography B” The new method can measure sleep-related hormones in hair effectively and could help track long-term sleep patterns.