The pineal gland, which produces melatonin to regulate sleep, can develop calcium deposits (calcifications) over time. Researchers aren’t certain why this happens, though aging, metabolic activity, ...

The pineal gland is a small gland in the center of the brain. It secretes melatonin, which plays a role in the circadian rhythms or body clock. It may also affect bone metabolism, mental health, and ...

The pineal gland produces several hormones. One of these, melatonin, helps regulate the body’s internal clock, including the sleep-wake cycle. The pineal gland may also help regulate female hormone ...

Organoids are miniature, simplified versions of an organ. Over the past two decades, scientists have developed them for the gut, lung, liver, mammary gland, brain, and more. Now, researchers at Yale ...

Many animals undergo seasonal physiological changes in order to ensure that their babies are born during a time of more abundant food and milder weather and to help their bodies prepare for harsh ...