Hair samples contain a class of steroid hormones secreted as a response to stress.
Scientists are increasingly using long-term levels of scalp hair cortisol and its inactive form, hair cortison, as biomarkers that represent the cumulative exposure to glucocorticoids over the previous months.
So in the new study, researchers analyzed cortisol and cortisone levels in 6,341 hair samples from adult men and women enrolled in Lifelines—a multi-generational study including over 167,000 participants from the northern population of the Netherlands.Participants were followed for an average 5-7 years to assess the long-term relationship between cortisol and cortisone levels and incident CVD in samples taken from their hair. In this time frame, there were 133 CVD events.
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