Medications

Common supplement SAMe could be toxic, scientists warn

A dietary supplement sold over the counter could be toxic and should not be used until it is shown to be safe, biologists from the Universities of Manchester and Kyoto have discovered.

Overweight & Obesity

Can weekly prednisone treat obesity?

Obese mice that were fed a high-fat diet and that received prednisone one time per week had improved exercise endurance, got stronger, increased their lean body mass and lost weight, reports a new Northwestern Medicine study. ...

Health

Experts urge reconsideration of 'standard' for time-keeping

The U.S. Senate passed a bill on March 15 that would make daylight savings time permanent. It was approved by consent—and some are framing this procedural move as an "end run," as many senators said they were surprised ...

Health

Why permanent daylight saving time is a bad idea

When Senators Marco Rubio of Florida and Edward Markey of Massachusetts introduced the bipartisan Sunshine Protection Act earlier this month, they rattled off a long list of reasons for making daylight saving time (DST) permanent.

Obstetrics & gynaecology

Working shifts may delay the onset of menopause

It's no secret that working nontraditional shifts can wreak havoc on lifestyle and sleep habits. Shift work has also been known to have a negative effect on workers' health. A new study suggests it also may delay the onset ...

Health

As clocks spring forward, keep sleep on track

You may only worry about losing an hour of sleep when the clocks spring forward this Sunday, but the time change can also be dangerous for your health, an expert says.

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Circadian rhythm

A circadian rhythm is a roughly-24-hour cycle in the biochemical, physiological or behavioral processes of living entities, including plants, animals, fungi and cyanobacteria (see bacterial circadian rhythms). The term "circadian", coined by Franz Halberg, comes from the Latin circa, "around," and diem or dies, "day", meaning literally "approximately one day." The formal study of biological temporal rhythms such as daily, tidal, weekly, seasonal, and annual rhythms, is called chronobiology.

Circadian rhythms are endogenously generated, and can be entrained by external cues, called Zeitgebers, the primary one of which is daylight. These rhythms allow organisms to anticipate and prepare for precise and regular environmental changes.

This text uses material from Wikipedia, licensed under CC BY-SA