Myths vs facts: Progesteron and sleep

Progesterone is often marketed as a natural sleep aid, but the evidence is nuanced. It does have mild sedative effects via GABA receptors, potentially reducing sleep latency and improving sleep quality, especially in women with PMS or menopause. However, effects are moderate and individual. A common myth is that progesterone alone cures insomnia; in reality, estrogen, cortisol, and lifestyle factors are equally important. Synthetic progestins (e.g., in birth control) differ from natural progesterone and may even impair sleep. Most evidence is mechanistic or from small observational studies; large RCTs are lacking. Without medical guidance, progesterone should not be used as a sleep supplement. Caveat: hormone therapy carries risks (e.g., thrombosis). Evidence: mechanistic/unclear.