Chronobiology

All life under the sun possesses innate timing mechanisms that regulate crucial components for survival. In humans, a small part in the hypothalamus of the brain, the suprachiasmatic nucleus, oversees the individual clocks ticking away in every cell of the body. These biological rhythms dictate everything from cellular regeneration, hormone production and metabolic processes, to heart function, immunity and responses...

Every time we consume food, we’re also feeding the bacteria that call our bodies home. The human body plays host to trillions of microorganisms, including thousands of species of bacteria, fungi and viruses. These microorganisms actually outnumber our own cells, and the vast majority of them reside in our digestive system. Referred to as the gut’s microbiota or gut flora...

Breakfast is often regarded as the most important meal of the day. As famed nutritionist Adelle Davis said, “breakfast gets the day’s work done.” New research on meal size and weight loss gives credence to this conventional wisdom by showing that eating a larger, high-energy breakfast aids weight loss and blood glucose control when compared to having our largest meals...

While it may not be entirely fair to blame an expanding waistline on our partners, there is growing evidence suggesting that our lifestyle choices have a domino effect on those who we share our lives with. With this in mind, a group of researchers asked themselves, “are weight loss efforts contagious in couples outside of highly-structured clinical settings?” The results of...

Many people all over the globe are endlessly trying to lose a few pounds -- or more. While doctors recommend accomplishing this through sustainable lifestyle changes, the diet industry often has other ideas. Advertisements on television, the internet and in magazines often claim that people can lose weight quickly through extremely restrictive diets. However, crash dieting is ineffective, with most...

In general, men are often perceived as being the physically stronger (and thus possibly healthier) gender. However, their response to infectious illness appears to be an exception to the rule. Many people over time have noted that men subjectively report worse symptoms from colds, cases of the flu and other illnesses. The same illness that most women will work through...

Seasonal affective disorder (SAD) is a type of depression that comes and goes with the seasons. The most typical pattern for SAD is that symptoms start in the late fall or early winter and go away with the arrival of spring. It is also possible for someone to experience seasonal affective disorder in a summer pattern, though this is quite...

The circadian rhythm is a huge topic of discussion lately due to a group of three researchers winning the Nobel Prize for identifying the genes and proteins that coordinate our internal clocks. As the Nobel Laureate committee noted, a small mismatch between our bodies and the environment can lead to serious health problems. This makes understanding chronobiology and the circadian...

Melatonin is a popular natural supplement used by millions who occasionally have trouble falling asleep. While melatonin can be effective, there are dangers to assuming natural compounds are always safe—especially when they are combined with other supplements, prescription medications or alcohol. Melatonin and alcohol taken together can lead to serious complications. Alcohol can also impact the effects of melatonin. Here's...

Guest Post: Chronobiology.com The chronobiology community received one of the highest recognitions on Monday as the Nobel Prize in physiology or medicine was awarded to three Americans for their discovery on how internal clocks and biological rhythms govern human life. Jeffrey C. Hall, Michael Rosbash and Michael W. Young took home the prize "for their discoveries of molecular mechanisms controlling...