Rob Stein

A tobacco product that its maker claims to be safer than cigarettes won qualified support from a Food and Drug Administration advisory panel Thursday.

The advisers voted 8-1 to support cigarette giant Philip Morris' claim that its "iQOS" system "significantly reduces your body's exposure to harmful or potentially harmful chemicals." The device heats tobacco but doesn't ignite it.

Chinese researchers have finally figured out how to clone a primate, using the same technique Scottish researchers devised to clone the first mammal, Dolly the sheep, in the mid-1990s.

The United States appears to be in the midst of an unusually severe flu season, officials at the federal Centers for Disease Control and Prevention said Friday.

The flu season started early, which is never a good sign, and the flu is already widespread throughout the country, the CDC's latest report shows. Half of states are reporting especially intense flu activity.

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Life expectancy in the U.S. fell for the second year in a row in 2016, nudged down again by a surge in fatal opioid overdoses, federal officials report Thursday.

"I'm not prone to dramatic statements," says Robert Anderson, chief of the mortality statistics branch at the National Center for Health Statistics. "But I think we should be really alarmed. The drug overdose problem is a public health problem, and it needs to be addressed. We need to get a handle on it."

Scientists have now edited genes inside mice to prevent a form of inherited deafness.

While cautioning that much more research is needed, the scientists said they hope the technique might someday be used to prevent deafness in children born in families with a history of genetic hearing loss.

Before that could happen, however, extensive tests would be needed to determine whether the treatment is safe — and whether it would actually work in humans.

Updated at 4:17 p.m. ET to include comment from homeopathic pharmacists.

The Food and Drug Administration said it plans to crack down on the sale of some homeopathic products.

The agency unveiled a new, risk-based approach to regulating homeopathic treatments Monday that aims to protect the public from dangerous products.

Editor's note, Jan. 17: Some identifying information has been removed from this report to guard the privacy of the family that is part of the probiotics test.

It's a typical hectic morning at Michele's house in Northern Virginia when she gets a knock on her front door.

Health officials are warning that the United States may have an unusually harsh flu season this year.

But they stress that flu seasons are notoriously difficult to predict, and it's far too early to know for sure what may happen.

Eli Wheatley and Christian Guardino are among a growing number of patients whose lives are apparently being saved or radically improved by gene therapy.

Wheatley, 3, of Lebanon, Ky., and Guardino, 17, of Patchogue, N.Y., were both diagnosed with what were long thought to be incurable genetic disorders. In the past, Wheatley's condition would have probably killed him before his first birthday. Guardino's would have blinded him early in life.

But after receiving experimental gene therapies, both seem to be doing fine.

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