News Release 

Sex differences in circadian disruption

Proceedings of the National Academy of Sciences

In a study in which 14 adults aged 20 to 49 were observed for 24 hours across 8 days, researchers found that circadian disruption caused women, but not men, to exhibit a decrease in satiety hormones and an increase in hunger hormones; consistent with the appetite hormone changes, women reported reduced fullness, whereas men reported increased cravings for energy-dense and savory foods, suggesting that sex influences the effects of circadian disruption on the regulation of energy balance.

Article # 19-14003: "Sex differences in the circadian misalignment effects on energy regulation," by Jingyi Qian et al.

MEDIA CONTACT: Jingyi Qian, Brigham and Women's Hospital, Harvard Medical School, Boston, MA; 617-525-7423, 310-890-8462; email: jqian@bwh.harvard.edu; Frank A.J.L. Scheer, Brigham and Women's Hospital, Harvard Medical School, Boston, MA; TEL: 617-732-7014, 617-755-4690; email: fscheer@bwh.harvard.edu

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