February 2024 in “Psychoneuroendocrinology” The COVID-19 pandemic did not significantly change stress levels in preschoolers, but higher-income families' children showed higher stress.
July 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” MPZL3 is important for controlling the hair growth cycle in mice and humans.
90 citations
,
July 2014 in “Conservation Physiology” Hair cortisol levels in brown bears can be affected by both long-term and short-term stress.
50 citations
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November 2020 in “Physiology & behavior” People with depression often have higher hair cortisol levels, while those with PTSD tend to have lower levels, but more research is needed to understand this fully.
33 citations
,
January 2017 in “Psychoneuroendocrinology” Hair dyeing and washing frequency do not affect hair cortisol levels.
24 citations
,
October 2018 in “Addiction Biology” Alcohol dependence affects stress hormone levels more than childhood maltreatment.
21 citations
,
January 2020 in “Conservation Physiology” Hair follicles increase hair cortisol levels, so consistent hair collection methods are important.
16 citations
,
January 2021 in “Frontiers in veterinary science” Pigs in farrowing crates and loose-housing systems showed no difference in chronic stress levels as measured by hair cortisol.
16 citations
,
January 2017 in “Archives of Medical Science” Sorafenib after liver surgery may increase survival for some liver cancer patients.
12 citations
,
January 2016 in “Journal of clinical biochemistry and nutrition” Deferasirox combined with sorafenib reduces liver cancer risk and lessens treatment side effects.
8 citations
,
January 1986 in “Journal of hepatology” Men with liver cancer have higher levels of a specific testosterone byproduct in their liver and blood, despite overall lower male hormone levels.
5 citations
,
May 2021 in “Veterinary medicine and science” Injecting cosyntropin into grizzly bears increases blood cortisol but doesn't change hair cortisol levels.
3 citations
,
January 2013 in “Journal of cosmetics, dermatological sciences and applications” HAIRCARECUBE TM (HCC) helps hair products work better by getting active ingredients deeper into the hair.
1 citations
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July 2023 in “Psychoneuroendocrinology” Hair cortisol is a reliable marker of long-term cortisol levels and is linked to daytime saliva cortisol but not morning levels.
1 citations
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September 2016 in “Brain Behavior and Immunity” Hair cortisol levels can indicate stress and are affected by washing frequency, not cosmetic treatments.
1 citations
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January 2003 in “Benjamins eBooks” Confinement in farrowing crates doesn't increase chronic stress in sows, but hair cortisol measurements may not reliably indicate stress due to hair growth variations.
February 2026 in “Psychoneuroendocrinology” Lower family income is linked to more stress in parents and more behavior problems in children.
January 2026 in “Psychoneuroendocrinology” Lye relaxers don't significantly change hair cortisol levels.
January 2026 in “Neuroscience Applied” Hair cortisol levels decrease as children age, stabilizing around age 4.
October 2025 in “Journal of Veterinary Diagnostic Investigation” Black hair in cats has higher cortisol levels than white hair.
July 2025 in “Medical Science” Anabolic steroids and SARMs can cause serious liver damage.
February 2024 in “Psychoneuroendocrinology” Mothers with lower stress during pregnancy but higher stress after birth had infants with lower development scores.
May 2023 in “Animal Reproduction Update” High levels of cortisol in hair show long-term stress which can lower fertility in animals.
October 2022 in “European heart journal” Higher stress levels were found about two weeks before a heart attack.
May 2022 in “Gastroenterology” Supplemental testosterone may lower liver cancer risk in hepatitis C patients.
April 2021 in “The journal of investigative dermatology/Journal of investigative dermatology” MPZL3 protein is important for controlling hair growth cycles.
June 2020 in “Authorea (Authorea)” First-time mothers had higher stress hormone levels in late pregnancy than mothers who had given birth before.
Hair cortisol content can indicate cortisol exposure and varies with age, puberty, and BMI in youth.
January 2018 in “Belarusian State Pedagogical University repository (Belarusian State Pedagogical University)” Stress might trigger hair loss in alopecia areata, but more research is needed.
January 2018 in “Digital Scholarship - UNLV (University of Nevada Reno)” Hair cortisol levels can indicate chronic stress in children, with differences seen between races.