A new study from the University of Waterloo shows that analyzing children’s hair to measure long-term stress levels can help identify early mental health risks, especially for those with chronic physical illnesses. The research found that children with consistently high levels of the stress hormone cortisol in their hair were more prone to anxiety, depression, and behavioral issues. Conversely, children whose cortisol levels decreased over time experienced fewer of these problems.
find the original post here https://www.sciencedaily.com/releases/2025/09/250915202834.htm
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