Hormone levels fluctuate like the tides, ebbing and flowing according to carefully orchestrated cycles. These hormones not only influence the body, but can cross into the brain and shape the behavior ...

Contrary to researchers' expectations, cats with higher levels of the hormone oxytocin displayed fewer bonding behaviors than those with lower levels. Marcel ter Bekke via Getty Images A new study ...

A common artificial sweetener found in thousands of foods may threaten male fertility by disrupting hormones and damaging sperm, new research in rats reveals. Study: Exposure to Sucralose and Its ...