28 August 2015, 12:35 PM ET
An update to the serving sizes listed on food labels will better reflect the amount of food people actually eat, the Food and Drug Administration (FDA) says. But determining an appropriate serving size may be trickier than you think.
28 August 2015, 12:17 PM ET
Smoking pot frequently may lower men's sperm counts, a new study finds.
28 August 2015, 08:04 AM ET
New mom and scientist Alice Callahan teaches other parents how to interpret studies on childrearing so that they can make informed decisions.
27 August 2015, 05:35 PM ET
Pop quiz: What exactly is a "serving size"? In a new study, just about 20 percent of people answered this question correctly, saying that serving size is how much people typically eat in one sitting.
27 August 2015, 04:15 PM ET
To better fight obesity and its related diseases, people should stop counting calories and instead focus on eating nutritious foods, several researchers argue in a new editorial.
27 August 2015, 03:27 PM ET
Predicting West Nile outbreaks may soon become as common as predicting the weather.
27 August 2015, 03:05 PM ET
Viruses related to the human immunodeficiency virus (HIV) have infected Old World monkeys as far back as 16 million years ago, according to a new study.
27 August 2015, 02:58 PM ET
Most infants and kindergartners in the United States are up-to-date with their vaccinations, but there are some areas where vaccination rates are lower, potentially increasing the risk of disease spread there.
27 August 2015, 02:25 PM ET
Meth lab injuries are on the rise in some parts of the U.S., according to a new report from the Centers for Disease Control and Prevention (CDC).
27 August 2015, 02:00 PM ET
A man in the United Kingdom experienced a very rare complication of the Polio vaccine he received in childhood.
27 August 2015, 01:07 AM ET
Broken genes wreak havoc, but new technologies may soon allow for precision repairs.
27 August 2015, 01:02 AM ET
Dietary fiber is a plant-based nutrient that is sometimes called roughage or bulk. Fiber is important to digestion and regularity, weight management, blood sugar regulation, cholesterol maintenance and more.
26 August 2015, 08:06 PM ET
Second-born siblings may argue that firstborns get all the glory, but there may be a health benefit to coming in second.
26 August 2015, 05:42 PM ET
Burger King is proposing a one-day truce with its fast-food competitor McDonald's to create the "McWhopper," a combination of the Big Mac and the Whopper. But just how many calories would this conglomeration have?
26 August 2015, 05:20 PM ET
Violent crime is complex, but America's dual obsession with guns and fame may explain the nation's high rates of mass shootings.
26 August 2015, 04:11 PM ET
The human circulatory system keeps blood, oxygen and nutrients flowing through the body.
26 August 2015, 12:03 PM ET
An epigenetic switch may explain the hormone cascade that kicks off labor, offering hope for the prevention of preterm births.
26 August 2015, 11:00 AM ET
Some people who smoke pot do show changes in brain development, but those changes seem to be dependent on genes and other factors.
25 August 2015, 07:34 PM ET
Carbohydrates — one of the basic food groups — are the sugars, starches and fibers found in fruits, grains, vegetables and milk products. They are important to a healthy life.
25 August 2015, 07:21 PM ET
Vitamin A is good for healthy vision, skin, bones and other tissues in the body. Vitamin A often works as an antioxidant, fighting cell damage, but it also has many other uses.
25 August 2015, 06:20 PM ET
There's been an unusually high number of plague cases in the United States this year, according to a new report from the Centers for Disease Control and Prevention (CDC).
25 August 2015, 04:57 PM ET
More than one-third of American adults are obese, and now, a new report shows that children and teens aren't far behind.
25 August 2015, 03:16 PM ET
For women, some warning signs for stroke — from hiccups to chest pain — are not what you might suspect.
25 August 2015, 11:15 AM ET
A man in the United Kingdom made headlines recently when he had surgery to give him a so-called "bionic penis," but experts say the man actually had a penile implant — a device that is not uncommon.
25 August 2015, 12:32 AM ET
Riboflavin is a B-complex vitamin that helps the body break down carbohydrates, proteins and fats to produce energy.
24 August 2015, 09:37 PM ET
The human skeleton has 206 bones and performs several vital functions.
24 August 2015, 04:03 PM ET
Stanford University researchers have developed a folding lens that can turn a cell phone into a microscope. It’s made with simple materials (paper and glass balls) for under a dollar. Aaron Pomerantz captured a mite in action.
24 August 2015, 09:30 AM ET
A woman got a nasty bacterial infection in her knee, and her vigorous tooth-flossing regimen may be to blame, a new case report finds.
24 August 2015, 09:25 AM ET
Compounds found flax and sesame seeds may help prevent or slow weight gain in women, a new study suggests.
22 August 2015, 06:37 AM ET
Zofran: Dosage, Side Effects & Pregnancy
21 August 2015, 04:18 PM ET
Breakups can have severe emotional aftermath... or not. Here's a look at what science says about splitting up.
21 August 2015, 04:10 PM ET
A 29-year-old woman went to the ER because she felt hysterical, and unable to calm down. But doctors soon found the true problem.