hormone-guides

Testosterone in the Menstrual Cycle

Testosterone plays a role in AFAB bodies throughout the menstrual cycle — peaking around ovulation, influencing libido and energy, and serving as a key marker in PCOS. Here's what tracking reveals about testosterone patterns.

Testosterone circulates in every body. In AFAB bodies, the ovaries and adrenal glands produce it in smaller quantities than in AMAB bodies, but it is not a trace hormone — it has measurable effects on energy, libido, muscle, bone, mood, and the menstrual cycle itself. This article is for educational purposes and is not medical advice. Consult a healthcare provider for diagnosis or treatment. Testosterone Across the Cycle Testosterone follows a predictable pattern through the menstrual cycle: Early follicular phase. Testosterone is at its lowest, along with estrogen and progesterone. The hormonal environment is quiet. Late follicular phase. Testosterone begins rising as follicles develop. The theca cells of the ovarian follicles produce androgens, which are partially converted to estrogen by granulosa cells via aromatase. This rising testosterone contributes to the increase in energy and libido that many people notice in the days before ovulation. Ovulation window. Testosterone peaks around the time of ovulation, coinciding with the LH surge. This mid cycle peak is the highest testosterone point in the cycle and aligns with peak libido in many individuals. Luteal phase. Testosterone