加州大学洛杉矶分校的科学家报告说，在分娩一年后，每晚睡眠不足7小时（出生后头6个月）的母亲的“生物学年龄”比睡眠7小时或以上的母亲大3至7岁。

New mothers’ sleep loss linked to accelerated aging

https://www.sciencedaily.com/releases/2021/08/210805115519.htm

Judith E. Carroll, Kharah M. Ross, Steve Horvath, Michele Okun, Calvin Hobel, Kelly E. Rentscher, Mary Coussons-Read, Christine Dunkel Schetter. Postpartum sleep loss and accelerated epigenetic aging. Sleep Health, 2021; 7 (3): 362 DOI: 10.1016/j.sleh.2021.02.002