30 April 2015, 10:44 PM ET
This may be the most important system in the body. Without the ability to reproduce, a species dies.
30 April 2015, 07:19 PM ET
People who walk for just 30 minutes daily benefit from it, a new study finds.
30 April 2015, 02:55 PM ET
Doctors and veterinarians in the southwestern United States should keep an eye out for cases of plague, according to a new report from the Centers for Disease Control and Prevention.
30 April 2015, 01:55 PM ET
A lab worker in Boston became infected with a virus similar to smallpox after he accidentally stuck himself with a needle that was contaminated with the virus, according to a new report of the case.
30 April 2015, 04:04 AM ET
Some women get more benefit than others from doing the same type of exercise, and genes now researchers say they know one reason why.
30 April 2015, 01:27 AM ET
Mitochondria are specialized cellular structures that power various functions.
29 April 2015, 04:53 PM ET
Chipotle's decision to prepare only food that does not contain genetically modified ingredients is adding fuel to an ongoing debate about the health and safety of these foods.
29 April 2015, 04:36 PM ET
A person's urine could reveal whether they are at risk for obesity and related harmful conditions, a new study suggests.
29 April 2015, 02:26 PM ET
Infections with difficult-to-treat and sometimes deadly gut bacteria called "C. diff" are highest in the spring, according to a new study.
29 April 2015, 01:51 PM ET
A new "4D" medical device has saved the lives of three baby boys with life-threatening breathing problems, researchers say.
29 April 2015, 09:00 AM ET
The rate of deaths from cancer appears to be on the decline worldwide, a new study suggests.
28 April 2015, 06:39 PM ET
Men who are polygamous have more than quadruple the risk of narrowed coronary arteries, new research suggests.
28 April 2015, 03:04 PM ET
For people who are addicted to opioid painkillers, getting treated for addiction in the emergency room rather than waiting to see an addiction specialist may be beneficial, a new study suggests.
28 April 2015, 11:37 AM ET
How safely a teenager drives may depend on who's in the passenger seat, a new study finds.
28 April 2015, 03:00 AM ET
Being bullied during childhood may have even graver consequences for mental health in adulthood than being neglected or abused, according to a new study.
28 April 2015, 01:03 AM ET
Crunchy, crispy celery is well known for being low in calories, but its health benefits go far beyond use as a diet food.
27 April 2015, 05:13 PM ET
The aftermath of the Nepal earthquake brings a risk of disease outbreaks — including measles and diarrheal diseases — among the survivors.
27 April 2015, 04:12 AM ET
Head lice are annoying, but they don't make people sick, and so children with lice should not be kept away from school, according to new guidelines from a leading group of pediatricians.
27 April 2015, 12:42 AM ET
Risperdal (generic name risperidone) is an antipsychotic drug prescribed to treat schizophrenia, bipolar disorder and some behavioral problems in children with autism.
24 April 2015, 06:44 PM ET
Dr. Oz may need a "miracle cure" of his own if he wants to keep his job. More than 700 doctors say he should resign from his post, an ongoing poll finds.
24 April 2015, 04:31 PM ET
Too much time spent sitting at work and during off hours may increase women's risk of breast and endometrial cancer, a new study from Sweden suggests.
24 April 2015, 03:20 PM ET
A large melanoma tumor on a woman's chest disappeared so quickly that it left a gaping hole in its place after she received a new treatment containing two melanoma drugs, a new case report finds.
24 April 2015, 07:07 AM ET
Men with male pattern baldness may be at increased risk of dying from prostate cancer, a new study suggests.
24 April 2015, 03:59 AM ET
Placing infants in car seats and other sitting devices for naps may put their lives in danger, according to a new study.
23 April 2015, 07:02 PM ET
People who breathe polluted air every day may have smaller brains, and a higher risk for "silent strokes," researchers say.
23 April 2015, 05:29 PM ET
An Indiana woman's brain tumor that turned out to contain hair bone and teeth has been dubbed an "embryonic twin," but experts say that such tumors are not really twins, nor embryos.
23 April 2015, 03:22 PM ET
The limitations in a technique of human-genome editing make it too dangerous to use in human embryos at this point, many experts say.
23 April 2015, 02:50 PM ET
The recent outbreaks of whooping cough in the United States may be due, in part, to a change made two decades ago to vaccine ingredients, a new study finds.
23 April 2015, 09:59 AM ET
Lightweight spring and clutch mechanism, attached to the lower-leg, augments calf muscles and achilles tendon to boost walking efficiency about 7 percent. This test article paves the way for a whole class of assistance technologies.
23 April 2015, 09:36 AM ET
When 11-month-old babies were shown surprising situations. – such as a ball appearing to go through a wall – they quickly tried to test it themselves.
22 April 2015, 10:10 PM ET
Listeriosis is a bacterial infection typically caused by eating contaminated food.
22 April 2015, 07:03 PM ET
The human digestive system converts food into nutrients that the body needs.