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The weather phenomenon El Niño and global warming fueled the spread of the Zika virus in South America, scientists say.

A new study reports on the trends in marijuana use in "reproductive-aged" women and women who are pregnant.

While your doctor knows best, here is a running list of immunizations and boosters you might want to look into for the new year.

More Americans died from heroin-related incidents than from gun homicides in 2015, a recent report says.

With the promotion of its alternative cigarette product, the IQOS, Phillip Morris could move away from cigarettes.

Scientists conducted an experimental treatment on monkeys combining old techniques and new with promising results.

An estimated 1.5 million cases of chlamydia were reported in 2015.

Hundreds of people in Arkansas have recently reported symptoms or tested positive for the mumps.

A new study shows that household dust might leave you at risk for more than allergies.

No state in the United States registered a rate below 20 percent, while four states had the adult obesity rate of over 35 percent.

The positive samples came from the Miami Beach area and is the first time Zika-carrying mosquitoes have been identified on U.S. soil.

Country Fresh announced a recall on nearly 30,000 cases of precut vegetables after many packages of food were discovered to be contaminated with Listeria monocytogenes.

Researchers from Liberia’s Men’s Health Screening Program found that one man had been carrying the virus in his semen 565 days after recovery.

Virginia has confirmed a total of 23 cases of Hepatitis A linked to a smoothie chain's strawberries.

Sepsis is a difficult-to-diagnose complication of an infection that can be life threatening even with minor delays.

A case of the "brain-eating amoeba" recently surfaced in Florida.

Certain racial and ethnic groups continue to smoke cigarettes at higher rates than others, a Centers for Disease Control and Prevention report said Thursday.

The test, granted an emergency OK, will help doctors determine if a person is infected with Zika, chikungunya or dengue.

The states involved in the outbreak are Alabama, Arizona, Connecticut, Georgia, Michigan, Minnesota, North Dakota and Virginia.

Massachusetts Sen. Elizabeth Warren has called for more federal research into whether legal marijuana can curb the prescription painkiller epidemic.

The Centers for Disease Control and Prevention said Thursday that Americans consume far too much sodium.

A 37 percent increase since 2002 in fatalities from cirrhosis and other health effects does not include deaths from drunken-driving crashes.

What public health researchers don't know about America's guns --and wish they did.

Ajanta Pharma has launched its generic Montelukast Sodium tablets for treatment of people with asthma and seasonal allergy in the United States.

While no deaths have been reported, five people have been hospitalized as a result of the outbreak, and two of them developed hemolytic uremic syndrome, which can lead to kidney failure.

Taking a step toward prevention of foodborne illness, the U.S. Food and Drug Administration has finalized the rules that outline the safety standards to be followed by different parties involved in the food production.

The U.S. Food and Drug Administration has approved the use of Cotellic in combination with Zelboraf for the treatment of advanced melanoma.

Cancer cells transmitted from common stomach bug led to the development of cancer-like tumors in a Colombian man, report U.S. health officials.

Shigella can cause diarrhea, fever and stomach cramps, and poses greater risks to those with weaker immune systems.