Nitric oxide isn’t a nutrient you’ll find on food packaging — but it plays a critical role in how your body moves, recovers, and circulates blood. This molecule helps blood vessels relax and widen, ...

Antioxidants are a very important part of a healthy diet. Most researchers believe that antioxidants are what the body needs to combat free radicals, which have been linked to cancer and other serious ...

Diabetes affects the way the human body produces and regulates insulin, the hormone that regulates blood sugar, and the way it metabolizes carbohydrates. It can result in higher levels of glucose in ...

Stomach, or gastric, cancer develops in the inner lining of the stomach. It typically grows more slowly than many other cancers, which can make early symptoms easy to miss. The signs can also vary ...

An aneurysm occurs when a blood vessel in the brain begins to bulge due to weakness in the blood vessel wall. These enlarged vessels can leak, causing a rupture and bleeding in the brain. Once an ...

The bladder is a balloon-like organ located in the lower abdomen. This muscular sac holds the urine produced by the kidneys. Bladder cancer develops when cancerous cells develop in the lining of the ...

Extra water in the body due to a high-sodium diet or a health condition can cause uncomfortable symptoms of water retention and swelling. To rid yourself of excess water, you might be tempted to drink ...

For hundreds of years, humans have bred dogs to selectively enhance certain behavioral and physical traits. Some crossed two different types of dogs to intensify their hunting or guarding capabilities ...

Runny noses are caused by inflammation and excess mucous production in nasal passageways. These thin secretions build up and then drip down both the nose and throat. This can cause symptoms in ...

Pneumonia occurs when bacteria enters your lungs, when food, stomach acid, or your saliva goes down or comes up the esophagus -- the wrong channel. This condition is called pulmonary aspiration, and ...

A nodule is an abnormal tissue growth that can appear anywhere in the body and can form for various reasons. Depending on their location, nodules may not cause symptoms, and many people with nodules ...

Lower back pain is extremely common, affecting millions of people every day. But what does it mean when the pain is felt only on one side? One-sided lower back pain could represent a minor issue that ...