Rae Ellen Bichell

An investigation into a clinical test in France that left one person dead and put five in the hospital has found evidence of brain damage in people who took high doses of the experimental pain medicine.

The early-stage clinical study, conducted by Biotrial in France, was halted in January when ...

Republican representatives continue to question the need for about $2 billion in emergency funding requested by the Obama administration to respond to the Zika virus.

Congressmen including Dr. Michael Burgess, R-Texas, asked in a hearing of an Energy and Commerce subcommittee Wednesday whether funds earmarked for combating the ...

Researchers say Zika virus should be added to the list of diseases that cause Guillain-Barre syndrome, a neurological condition that's been rising in areas with Zika transmission.

HIV rates have been on the decline in the U.S. for years now, but stark disparities remain, with some groups of people at high risk of infection.

Here's the good part: The number of people diagnosed annually has dropped by about 20 percent in the last decade.

The drop was ...

Health officials announced Tuesday that they are investigating 14 new U.S. cases of possible sexual transmission of the Zika virus.

The virus was confirmed to be in blood samples from two women, using a method that detects pieces of the virus' genetic material, say doctors from the Centers for ...

Fewer people are having strokes now than decades ago. But that improvement seems to be mostly among the elderly. Young people are actually having more strokes, partly because of the rise in obesity.

A report from doctors in Argentina raises the possibility that a mosquito pesticide could be responsible for an increase in microcephaly in Brazil. But many top scientists strongly disagree.

In the summer of 2014, a 23-year-old pregnant woman entered the military hospital at Bagram Air Field in Afghanistan with a cut on her left cheek. The wound had been stitched up elsewhere, but she still wasn't quite right.

She said she'd been hit in the face by a ricochet ...

Women report more bad side effects from medicines than men do. Researchers say the discrepancy may stem in part from how biomedical research is conducted at its earliest stages in animals.

Since it was first discovered in Uganda in 1947, Zika virus was known mostly as a short-lived and mild illness. In 2015, that all changed. An outbreak in Brazil is suspected of causing cases of a serious birth defect, microcephaly, and a potentially crippling disease, Guillain-Barre syndrome.

As ...

Until very recently it was thought that just one bacterium was to blame for causing Lyme disease in humans. But it turns out that a second, related bug can cause it too.

In 2013, during routine testing of bacterial DNA floating around in the blood samples of people suspected of ...

A patient acquired Zika virus in the U.S. through sex with a person who had traveled to a place where the virus is circulating, Dallas County, Texas, health officials and the Centers for Disease Control and Prevention reported Tuesday.

This is not the first time that the virus has ...

Many women in the U.S. are waiting longer than ever to have their first child.

Fifteen years ago, the mean age of a woman when she first gave birth was 24.9 years old. In 2014, that age had risen to 26.3.

"It doesn't sound like a big change," says

Ditch the strap-on belts and shoe inserts, and definitely don't rest. Accumulating research shows that the best way to treat and prevent lower-back pain is to get off the couch.

When the Romans expanded their empire across three continents, they probably seemed like the neat-freakiest people to attempt global domination.

The Romans brought aqueducts, heated public baths, flushing toilets, sewers and piped water. They even had multiseat public bathrooms decked out with contour toilet seats, a sea sponge version of ...

Food coloring, water, a preservative and a pound of morphine powder. These are the ingredients in Dr. Anne Merriman's recipe for liquid morphine.

"It's easier than making a cake," says Merriman, a British palliative care specialist who founded Hospice Africa in Uganda in 1993 and helped design the formula that ...

An inherited disorder that stems from a problem in the way the body handles iron in the blood has been called a "Celtic Curse" because of the condition's high prevalence among people with ancestry in the British Isles and Ireland.

But according to researchers writing Monday in the journal ...

They look like tiny tubes with stumpy legs. They can nestle snugly into pores, right at the base of small hairs. And there are probably hundreds on your face.

We're taking about Demodex folliculorum, the mite that calls your hair follicles home. "Probably if you've ever gotten a gross ...

Everyone has a set of genes that keeps the body on a 24-hour rhythm. As we get older, though, the main clock can malfunction. Researchers say a backup clock may try to compensate.

For some survivors of the Ebola virus disease, complete recovery is slow.

Doctors reporting Wednesday on a follow-up survey of the nine survivors who were treated for the Ebola virus in the U.S. say the survivors experienced a "wide constellation" of symptoms, involving many organ systems, for months after their ...