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Nat'l Inst. of Health (178)

Anemia
If you have anemia, your blood does not carry enough oxygen to the rest of your body. The most common cause of anemia is not having enough iron. Your body needs iron to make hemoglobin. Hemoglobin is an iron-rich protein that gives the red color to...

Autoimmune Diseases
Your body's immune system protects you from disease and infection. But if you have an autoimmune disease, your immune system attacks healthy cells in your body by mistake. Autoimmune diseases can affect many parts of the body.

Calcium
You have more calcium in your body than any other mineral. Calcium has many important jobs. The body stores more than 99 percent of its calcium in the bones and teeth to help make and keep them strong. The rest is throughout the body in blood,...

Diagnostic Imaging
Diagnostic imaging refers to technologies that doctors use to look inside your body for clues about a medical condition. A variety of machines and techniques can create pictures of the structures and activities inside your body. The technology your...

Fever
A fever is a body temperature that is higher than normal. It is not an illness. It is part of your body's defense against infection. Most bacteria and viruses that cause infections do well at the body's normal temperature (98.6 F). A slight fever...

Lewy Body Disease
Lewy body disease is one of the most common causes of dementia in the elderly. Dementia is the loss of mental functions severe enough to affect normal activities and relationships. Lewy body disease happens when abnormal structures, called Lewy...

Metabolic Disorders
Metabolism is the process your body uses to get or make energy from the food you eat. Food is made up of proteins, carbohydrates and fats. Chemicals in your digestive system break the food parts down into sugars and acids, your body's fuel. Your...

Parasitic Diseases
Parasites are living things that use other living things - like your body - for food and a place to live. You can get them from contaminated food or water, a bug bite, or sexual contact. Parasitic diseases can cause mild discomfort or be deadly.

Piercing and Tattoos
Piercings and tattoos are body decorations that go back to ancient times. Body piercing involves making a hole in the skin so that you can insert jewelry. This is often in the earlobe, but can be in other parts of the body. Tattoos are designs on...

Weight Control
If you are overweight, you are not alone. Sixty-six percent of adults in the U.S. are overweight or obese. Achieving a healthy weight can help you control your cholesterol, blood pressure and blood sugar. It might also help you prevent...