Cardiology

The influence of circadian rhythms on atherosclerosis

The internal clock controls all vital functions in the body. Body temperature as well as blood pressure or the release of certain enzymes are subject to oscillations throughout the day, the so-called circadian rhythm. For ...

Neuroscience

Research suggests brain's melatonin may trigger sleep

If you walk into your local drug store and ask for a supplement to help you sleep, you might be directed to a bottle labeled "melatonin." The hormone supplement's use as a sleep aid is supported by anecdotal evidence and ...

Neuroscience

Researchers identify gene that helps fruit flies go to sleep

In a series of experiments sparked by fruit flies that couldn't sleep, Johns Hopkins researchers say they have identified a mutant gene—dubbed "Wide Awake"—that sabotages how the biological clock sets the timing for sleep. ...

Medical research

Resetting the metabolic clock

We've all heard about circadian rhythm, the roughly 24-hour oscillations of biological processes that occur in many living organisms. Yet for all its influence in many aspects of our lives—from sleep to immunity and, particularly, ...

Medical research

The food-energy cellular connection revealed

Our body's activity levels fall and rise to the beat of our internal drums—the 24-hour cycles that govern fundamental physiological functions, from sleeping and feeding patterns to the energy available to our cells. Whereas ...