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Estrogen Cycling

Meaning

Estrogen cycling describes the natural, fluctuating pattern of estrogen hormone levels throughout the menstrual cycle in reproductive-age females, which is fundamental to reproductive health and systemic physiological function. This cycle involves a follicular phase characterized by rising estrogen levels, peaking before ovulation, followed by a secondary, lower rise during the luteal phase. Beyond reproduction, this cyclical fluctuation profoundly impacts bone density, cardiovascular health, mood regulation, and metabolic function. Clinical interventions sometimes employ exogenous hormone administration designed to mimic this natural, dynamic pattern to optimize health outcomes.