11 citations
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April 2020 in “Animals” This study reported that relocation in police horses was associated with elevated hair cortisol concentrations, possibly suggesting altered welfare due to changed surroundings, and that seasonal variations affected both cortisol levels and hair growth.
7 citations
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October 2015 in “American Journal of Primatology” The researchers observed that pregnancy in rhesus monkeys was associated with an increased incidence of hair loss, though the underlying reasons remain unclear.
May 2023 in “General and comparative endocrinology” This study found that hair cortisol concentrations in rhesus macaques were not significantly correlated with hair growth rate, suggesting that cortisol-mediated inhibition of hair growth does not explain higher cortisol levels within the non-stress range.
September 2021 in “Psychoneuroendocrinology” This study observed that female nurses experienced higher hair cortisol concentrations, indicating increased stress, during periods of the COVID-19 pandemic compared to the summer release period.
January 2018 in “Belarusian State Pedagogical University repository (Belarusian State Pedagogical University)” This study observed that stress, as indicated by hair cortisol concentrations, may trigger onset of hair loss in alopecia areata, although the findings were not statistically significant.