What if you knew, even before your child was born, that she wouldn't look like everyone else?

Clara Beatty's parents knew.

Federal authorities charged 107 doctors, nurses and social workers in seven cities with Medicare fraud Wednesday in a nationwide crackdown on unrelated scams that allegedly billed the taxpayer-funded program of $452 million — the highest dollar amount in a single Medicare bust in U.S. history.

It was the latest in a string of major arrests in the past two years as authorities have targeted fraud that's believed to cost the government between $60 billion and $90 billion each year. Stopping Medicare's budget from hemorrhaging that money will be key to paying for President Barack Obama's health care overhaul.

Fifteen million babies, or one in 10 around the world are born premature every year, and 1.1 million of those infants die, according to a U.N.-sponsored report released Wednesday.

Premature birth is the leading cause of death for newborn infants and is on the rise globally, said the report led by the March of Dimes, The Partnership for Maternal, Newborn & Child Health, Save the Children and the World Health Organization.

Aspirin works as well as the blood thinner warfarin, or Coumadin, in most patients with heart failure when it comes to preventing death, stroke or brain hemorrhage, said a major international study on Wednesday.

The findings published in the New England Journal of Medicine came from a landmark clinical trial that lasted 10 years and tracked 2,305 patients in 11 countries.

Scientists have pinpointed a protein that helps explain why the elderly frequently have to get up in the night to urinate, a problem that can badly interfere with sleep.

Deficient levels of protein called connexin43 trick the bladder into believing that it is full, which sends a "must urinate" warning to the brain, they report on Tuesday in the journal Nature Communications.

Most clinical trials for cancer, heart disease and mental health are too small to offer adequate medical evidence, said a review of the U.S. database of such studies released on Tuesday.

The analysis in the Journal of the American Medical Association was led by experts at Duke University in collaboration with the U.S. Food and Drug Administration.

Facebook on Tuesday unveiled an initiative to use the vast social network to connect organ donors with people who need life-saving transplants.

Facebook founder Mark Zuckerberg made the announcement and became one of the first Facebook users to sign up on the social network to be an organ donor.

A cheap, simple device widely used to monitor blood oxygen can help save newborn babies with congenital heart defects, a study in The Lancet determined on Wednesday.

Congenital heart flaws account for between three and 7.5 percent of all infant deaths, but surgery greatly improves the chances of survival, especially if the problem is detected at the earliest stages.

McDonald's is a sponsor for the London Olympics — and a British doctors' group says that's sending the wrong message in a country with ballooning obesity.

Big Macs, fries and milkshakes will be part of McDonald's exclusively branded menu at the Olympics and the fast-food giant will soon be opening its largest franchise in the world, a two-story cathedral-like restaurant that seats 1,500 customers, at London's Olympic Park. McDonald's will be the only restaurateur allowed to sell brand-name food at the Games and there will also be a separate McDonald's within the Athletes Village — in addition to three others at the Olympic Park.

When pregnant women are exposed to moderate levels of a common pesticide, their children may experience lasting changes in brain structure linked to lower intelligence, a U.S. study said Monday.

The study in the Proceedings of the National Academy of Sciences examined New York City pregnant mothers who were tested for exposure to chlorpyrifos, or CPF, which is widely used for pest control in farms and public spaces.