Case-control study, 2006
Can disrupted sleep and body rhythms explain mood problems around periods, pregnancy, or after birth?
It's a promising idea but not yet proven. Women with depression at these times show a different pattern of sleep and body rhythms than healthy women, though the exact pattern differs by life stage.
What they did
The authors reviewed studies comparing sleep and biological rhythms (melatonin, body temperature, cortisol, thyroid hormone, prolactin) in women formally diagnosed with depression versus healthy women, during the menstrual cycle, pregnancy, and the postpartum period.
What they found
Each reproductive stage (premenstrual, pregnancy, postpartum) has its own distinct sleep and rhythm pattern that separates depressed from healthy women, though some features overlap, such as raised prolactin levels.
What it means for you
If disrupted rhythms do drive these mood disorders, treatments that correct the timing or strength of these rhythms could help. But this is a review of other studies, not new research, and more work is needed to pin down the exact patterns.
About the study
- Original title
- Sleep, rhythms and women's mood. Part I. Menstrual cycle, pregnancy and postpartum
- Authors
- Parry BL, Martínez LF, Maurer EL et al.
- Journal
- Sleep medicine reviews
- Year
- 2006
- Study design
- Case-control study
- What was tested
- None tested directly; review discusses treatment strategies aimed at correcting rhythm problems.
- Read the paper
- doi.org/10.1016/j.smrv.2005.09.003
Topics
Related studies
Randomised trial, 2001
Do changing reproductive hormones disrupt the body's internal clock and cause mood disorders?
Study, 2026
What are premenstrual syndrome and premenstrual dysphoric disorder?
Review, 2019
How do brain changes during reproductive transitions cause depression in women?
Review, 2012
Is depression linked to hormonal changes during the menstrual cycle, pregnancy, and menopause?
Case-control study, 2004
Do menstrual characteristics and pregnancy history predict depression risk?
Review, 2023
How does the stress response system affect depression during reproductive stages like PMDD?