One of the surprises of this that the circadian clock operates in essentially all cells that contain a nucleus, not only specialized cells in the brain, allowing PER and TIM to “affect other aspects of physiology” with “implications for work schedules, sleep hygiene,” and more, ushering in the field of chronobiology.

As many as 25 percent of physicians practicing in the US were born in another country. Rural clinics and public safety-net hospitals, in particular, rely on foreign medical school graduates to take care of isolated and vulnerable populations. They often serve as primary care doctors, filling a vital need as more American-born MDs gravitate toward high-paying specialties.

Dentists have become a significant source of opioid prescribing — especially for younger patients undergoing wisdom teeth extractions. They prescribe about 8 percent of the opioids in this country, ... but are the top prescribers of these drugs to adolescents, accounting for 31 percent of all opioids given to patients aged 10 to 19 years old. That’s particularly concerning because that age group is among the most likely to abuse drugs and develop addictions.

Although this isn’t the first time someone in the US has been infected with pan-resistant bacteria, at this point, it is not common. It is, however, alarming ... Doctors and scientists who track the spread of antibiotic resistance — the rapidly proliferating swarm superbugs — see this case as a big red flag ... There is international recognition of the threat, which an expert report published last year warned could kill 10 million a year by 2050 if left unchecked.

Much has been written about the growing income inequality in the United States. But another kind of gap is also widening between the dinner table. Overall, Americans are eating better... But if you separate people out by income, it’s a different story...almost twice as many people at low incomes have poor diets compared to people at the highest income level... And because in absolute numbers more people are poor now than a decade ago, that effect is even greater than it may at first seem

Every day, thousands of scientific papers are published worldwide, written by dedicated researchers eager to advance knowledge. But a shocking number are not credible — more than half, by many estimates. They’re biased, undercut by flawed methods, littered with exaggerations, or in the worst cases, completely fraudulent ... we're in the midst of an extraordinary surge in retractions in science — a 10-fold increase over the previous decade, while ... new papers rose by only about 40 percent