claim
If pregnancy does not occur, estrogen and progesterone levels, which peak in the early part of the luteal phase, begin to drop, leading to the start of menstruation.
Authors
Sources
- Cycle Syncing: How to Understand Your Menstrual Cycle to Reduce ... healthmatters.nyp.org via serper
Referenced by nodes (5)
- estrogen concept
- progesterone concept
- luteal phase concept
- menstruation concept
- pregnancy concept