Doctors have long known that systolic blood pressure below 120 was considered normal and meant a lower risk of heart disease and kidney problems. But they would often only treat patients if that top number crept above 140, the threshold for officially having high blood pressure.
There are an estimated 76 million cases of food poisoning in the United States every year. A small fraction of these illnesses lead to hospitalization and death, but the vast majority usually just lead to a wretched day on the toilet.
The recent report of a tapeworm infection turning into possible cancer inside a 41-year-old man sounds more like a horror movie premise than science. But it is real, and has led to questions about whether common infections, previously thought to be harmless, can turn potentially fatal.
After years of bad news about the obesity epidemic, which affects one-third of Americans, things may finally be looking up. In the past 10 years the rates of obesity appear to be leveling off among both children and adults.