More than 700 species of microbes live in your mouth and they include bacteria, fungus, and more. Some are helpful, and some harmful. Don’t run for your toothbrush or mouthwash just yet. As long as ...

One way to prevent muscle cramps is to get enough of these nutrients: potassium, sodium, calcium, and magnesium. They’re called electrolytes, and this WebMD slideshow can help you find them in these ...

Why Does My Tooth Hurt? Whether it's sharp and sudden or dull and constant, tooth pain is hard to ignore. A toothache or tooth pain is caused when the nerve in the root of a tooth or surrounding a ...

Millions of Americans can’t digest a certain sugar in milk and milk products called lactose. If you’re one of them, you have lactose intolerance. The condition isn’t harmful, but it can be ...

Catatonia is often dramatically portrayed as a condition that belongs in horror movies, presenting someone as completely motionless or immobile for shock value.

Postnasal drip is the drainage of mucus from your nose or sinuses into your pharynx, or throat. Every day, glands in the linings of your nose, throat, airways, stomach, and intestinal tract produce ...

The active ingredient in peppermint is menthol. Some small studies show it can lessen the pain of migraine headaches. It may also reduce other symptoms like light sensitivity, nausea, and vomiting. A ...

‌You may have heard toddlers mimic noises and words when they hear others speak. This repetition or imitation of sounds, phrases, or words is called echolalia. The term comes from the Greek words ...

There are five kinds of hepatitis. Each has different causes, with one commonality: Hepatitis causes your liver to get inflamed. Hepatitis disease can also sometimes be spread through sexual contact.

Doctors don’t know what causes autism, but they believe genes play the biggest part in whether a child is born with it. While you can’t prevent having a child with an autistic disorder, you can ...

The "murmur" is the sound of blood flowing. It may be passing through an abnormal heart valve, for instance. Or it may be that a condition makes your heart beat faster and forces your heart to handle ...

Fasting is common to just about every major religious tradition, like Buddhism, Christianity, Hinduism, Islam, and Judaism. In ancient Greece, Hippocrates believed it helped the body heal itself.