November 2022 in “Innovation in aging” Older adults in Puerto Rico often couldn't be tested for hair cortisol due to refusal or lack of hair, with race and hair products affecting results.
38 citations
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December 2011 in “British Journal of Dermatology” Menopause-related hormonal changes affect hair but are not the only cause of hair changes in middle-aged women.
January 2026 in “Psychoneuroendocrinology” Loneliness raises stress levels in older African American men but not women.
July 2024 in “Journal of Investigative Dermatology” Skin hormone levels change significantly after menopause.
4 citations
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April 2013 in “Actas Dermo-Sifiliográficas” Most Spanish Caucasian women have a widow's peak, and their hormone levels suggest they process certain hormones faster.