Endocrine Abstracts

Almost all hormonal systems are dynamic with hormones being secreted in various combinations of ultradian, circadian, monthly and even yearly patterns.These patterns have emerged as natural consequences of the multilevel regulation of the hormone axes themselves and in response to environmental conditions such as the light:dark cycle, food availability and temperature. The Hypothalamic-Pituitary-Adrenal (HPA) axis is critical for life and delivers a complex system of pulsed st...