189 citations
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January 2014 in “Journal of Visualized Experiments” Hair cortisol analysis effectively measures long-term stress.
32 citations
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January 2017 in “Physiology & Behavior” New hair growth corticosterone levels are higher in diabetic mice, indicating long-term stress.
Hair cortisol levels can effectively indicate long-term hormone activity.
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January 2009 The procedure reliably measures cortisol in rhesus macaque hair.
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October 2018 in “PLoS ONE” Stress can slow hair growth and affect skin color by impacting the body's stress response system.