Figure 2.

Hair cortisol is lower in individuals with iron overload. Of the total study population, 23 individuals had self-reported iron overload. The average hair cortisol among individuals with iron overload was 14.8 pg/mg. 49 individuals did not have iron overload and the average hair cortisol among this group was 18.1 pg/mg. Log hair cortisol content was significantly lower in individuals with iron overload as assessed by logistic regression where the outcome was self-reported iron overload and the predictor was the log of hair cortisol content, adjusted for participant age and sex (β=-0.08, SE=0.04, P=0.04).