Impact of endogenous and exogenous progesterone exposure on stress biomarkers: a systematic review.

Stress activates the autonomic nervous system (ANS) and the hypothalamic-pituitary-adrenal axis (HPAA). Based on a systematic literature review of the impact of endogenous and exogenous exposure with natural progesterone on the stress response in healthy premenopausal and postmenopausal women, the following conclusions can be drawn: the HPAA activity was not relevantly affected by endogenous progesterone exposure across the menstrual cycle, but might be reduced by exogenous micronized progesterone application; in contrast, the ANS has a sympathetic predominance in the (progesterone-dominated) luteal phase of the menstrual cycle. Future studies should assess various stress biomarkers under various hormonal conditions to, for example, allow for cardiovascular risk stratification in hormone users.