05 January 2016, 10:35 PM ET
Viruses are microscopic parasites that lack the capacity to thrive and reproduce outside of a host body.
05 January 2016, 07:54 PM ET
A new study of twins holds clues about how much of people's cancer risk is genetic, and how much comes from the environment.
05 January 2016, 03:25 PM ET
Several new devices aim to harness certain scents to both help you sleep and wake you up.
05 January 2016, 11:16 AM ET
People who have been overweight at any point in their lives may be more likely to die early, even if they lose weight later, a new study suggests.
04 January 2016, 05:10 PM ET
Women in Oregon no longer need a doctor's prescription to get birth control pills, according to a new state law. Instead, they can fill out a health questionnaire and receive oral contraceptives from a licensed pharmacist.
04 January 2016, 04:31 PM ET
Social connections are important for your physical health, new research suggests.
04 January 2016, 03:20 PM ET
A young man who played football in college had already developed a degenerative brain disease by the time he died at age 25 from a heart problem, according to a new report of his case.
04 January 2016, 10:30 AM ET
A beer that researchers made using ingredients from kefir may be good for health, a rodent study suggests.
04 January 2016, 10:24 AM ET
Researchers have invented a heart rate monitor that can stick to your skin, and also store data.
01 January 2016, 10:39 AM ET
The brain circuits responsible for the inability to feel pleasure, called anhedonia, have been discovered in rats, a finding that could help researchers better understand the mechanisms underlying depression and schizophrenia.
31 December 2015, 03:45 PM ET
Do people who use legal marijuana drink less or more alcohol? The answer, it turns out, is complicated, a new study finds.
31 December 2015, 10:37 AM ET
If you want to stick to your New Year's resolutions, psychologists find that questioning your behavior, not stating your intentions, will help you out.
31 December 2015, 08:18 AM ET
A lot of health indicators suggest that Americans are on the road to better health.
30 December 2015, 08:14 AM ET
The numbers on the scale aren't going down, but the number of Americans who say they want to lose weight is.
30 December 2015, 08:12 AM ET
Here is our annual countdown of the "top five" scientific retractions in the last year, some serious, most comical.
30 December 2015, 08:10 AM ET
On New Year's Day on Brooklyn, New York's Coney Island beach, the sound of chattering teeth will fill the air, as thousands of people gather for a ceremonial wintry dip in the Atlantic Ocean.
29 December 2015, 04:15 PM ET
Small outbreaks of the plague still occur in the western United States, and now new research shows these clusters don't happen at random. Instead, they tend to pop up in areas that have certain mix of climates, animals and elevation, a new study finds.
29 December 2015, 07:35 AM ET
Here is a roundup of what scientists learned about marijuana during 2015.
24 December 2015, 12:58 AM ET
Youth sports are not the biggest risk kids face, so should those activities be banned?
23 December 2015, 03:23 PM ET
Gluten refers to the proteins found in wheat endosperm. Some people are gluten-intolerant, but a gluten-free diet is not for everyone.
23 December 2015, 02:04 PM ET
Blocking a molecule in the uterus could delay or even halt premature birth, the leading cause of death and disability of newborns worldwide, according to a new study in rodents.
23 December 2015, 06:46 AM ET
The number of twin births is on the rise in the U.S.
23 December 2015, 12:56 AM ET
Why are girls less likely to be diagnosed with autism?
22 December 2015, 10:28 PM ET
A pet rat leads to a hospital stay.
22 December 2015, 05:07 PM ET
Babies born with a low birth weight who are regularly held by their mothers skin-to-skin — or "kangaroo style" — may have a lower risk of dying prematurely, according to a new analysis of previous research.
22 December 2015, 11:07 AM ET
The Gulf of Mexico got a taste of the "red tide" earlier this month, and beaches all along the Gulf Coast were closed to keep people safe from potential health risks.
21 December 2015, 06:31 PM ET
When are tots old enough for tech?
21 December 2015, 05:13 PM ET
This flu season will likely not peak until February, and could be a mild one, according to a new model that aims to forecast flu in the United States this winter.
21 December 2015, 10:04 AM ET
The mayor of Flint, Michigan, declared a state of emergency last week after elevated levels of lead were detected in the city's drinking water. Here's a look at what lead does to the body.
18 December 2015, 04:26 PM ET
Putting up Christmas lights is part of the holiday tradition for many people, but it turns out that falls during installation can sometimes lead to serious or even deadly injuries, a recent study suggests.
18 December 2015, 01:40 PM ET
It's time for teens to stop tanning.
18 December 2015, 01:03 PM ET
Several new genes linked to an exceptionally long life have been discovered, according to a new study that examined the genomes of people living into their 100s, known as centenarians.