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Endocrine Fluctuations

Meaning

The predictable and often rhythmic changes in the concentration and biological activity of circulating hormones within the systemic circulation over defined temporal periods, such as circadian, ultradian, and infradian cycles. These fluctuations are not pathological but represent the body’s adaptive, programmed response to maintain homeostasis and coordinate physiological functions with environmental and internal demands. Understanding an individual’s specific endocrine fluctuations is fundamental for personalized hormonal health management and chronotherapy.