Definition & Facts for Diarrhea

What is diarrhea? Diarrhea is loose, watery stools three or more times a day. Diarrhea may be acute, persistent, or chronic: How common is diarrhea? Diarrhea is a common problem. Acute diarrhea is more common than persistent or chronic diarrhea. Researchers estimate that about 179 million cases of acute diarrhea occur in the United States each year.1 What are […]

Definition & Facts for Crohn’s Disease

In this section: What is Crohn’s disease? Crohn’s disease is a chronic disease that causes inflammation and irritation in your digestive tract. Most commonly, Crohn’s affects your small intestine and the beginning of your large intestine. However, the disease can affect any part of your digestive tract, from your mouth to your anus. Learn more about your digestive system and how it works. Crohn’s disease […]

Hepatitis B

In this section: What is hepatitis B? Hepatitis B is a viral infection that causes liver inflammation and damage. Inflammation is swelling that occurs when tissues of the body become injured or infected. Inflammation can damage organs. Viruses NIH external link invade normal cells in your body. Many viruses cause infections that can spread from person to person. The […]

Hepatitis A

In this section: What is hepatitis A? Hepatitis A is a viral infection that causes liver inflammation and damage. Inflammation is swelling that occurs when tissues of the body become injured or infected. Inflammation can damage organs. Viruses NIH external link invade normal cells in your body. Many viruses cause infections that can be spread from person to person. […]

Factors Affecting Weight & Health

Many factors can affect your weight, including Lifestyle habits Lifestyle habits—including the foods and beverages you consume and how active you are in your daily life—can also affect your weight. If you take in more calories from food or beverages than you use during physical activity and through daily living, such as doing housework or walking to […]