Obese children have elevated levels of a key stress hormone, according to a new study.
Researchers measured levels of cortisol -- considered an indicator of stress -- in hair samples from 20 obese and 20 normal-weight children, aged 8 to 12. Each group included 15 girls and five boys.
The body produces cortisol when a person experiences stress, and frequent stress can cause cortisol and other stress hormones to accumulate in the blood. Over time, this can lead to serious health problems, according to the authors of the study, which was published online Dec. 18 in the Journal of Clinical Endocrinology & Metabolism.
"We were surprised to find obese children as young as age 8 already had elevated cortisol levels," study author Dr. Erica van den Akker, of Erasmus MC-Sophia Children's Hospital in Rotterdam, Netherlands, said in a journal news release. http://www.nlm.nih.gov/medlineplus/news/fullstory_143544.html
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