May 2012 in “Neurotoxicology and Teratology” Hair cortisol can be a reliable way to measure long-term stress.
January 2026 in “Open Science Framework” January 2026 in “Open MIND”
December 2025 in “Biology Bulletin Reviews” Hair cortisol can indicate animal stress but varies with many factors.
July 2026 in “Psychoneuroendocrinology” Hair cortisol and cortisone levels can indicate specific psychosocial stress factors.