Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? Hormones are responsible for a lot—and when they fluctuate, they can affect ...

Cortisol is a hormone produced by the hypothalamic pituitary adrenal (HPA) axis that regulates your sleep-wake cycle and stress response. It peaks about an hour after you wake up and drops to its ...

Hormonal imbalances occur when there is too much or too little of a hormone in the blood. Common symptoms include weight changes, lower sex drive, and acne, but it depends on which hormone is out of ...

Endocrine glands secrete hormones into the bloodstream, while exocrine glands secrete substances, such as sweat or enzymes, into organs or onto the surface of the body. The two main types of glands in ...

Testosterone levels peak in the morning and decrease throughout the day. Testosterone levels in men typically decrease by about 1% per year after their 30s. Low testosterone can cause symptoms like ...