Circadian rhythms are endogenous oscillations widely present in living organisms, typically following approximately 24-hour ...

Seasonal biology reveals how winter alters gene expression, hormones, and immune function, impacting health through circadian ...

If you have excellent sleep hygiene but you're still tossing and turning, consider the powers of sunlight exposure for better ...

Also known as seasonal depression, it is largely characterized by recurring, seasonal episodes of depression that follow a ...

By contrast, glial cells seemed to be electrically silent and were dismissed as dull by most researchers. Some glia, called ...

Waking to loud alarms can be a shock to your system, triggering a fight-or-flight response. New research suggests a gentler, ...

Disruptions to your circadian rhythm (your body’s internal clock) are tied to higher risk of obesity, type 2 diabetes, high blood pressure, and cardiovascular disease, according to a new scientific ...

In a discovery that could shift labor and delivery practices around the world, researchers at Michigan State University have found that the effectiveness of oxytocin—a common medication used to induce ...

New research suggests that the circadian system in people with obstructive sleep apnea may disrupt blood vessel function overnight, which may help explain the higher risk of nighttime heart attacks in ...

The first thing I heard was the birdsong, then the pitter-patter of a tiny squirrel. My half-asleep brain couldn’t register the morning soundtrack. I rubbed my eyes awake and watched the buttery sun ...

Research details the importance of maintaining the body's rhythm for optimal health so NBC News medical contributor Dr. John Torres joins TODAY to explain how to maintain the cycle the body works on, ...