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What is cholesterol? Cholesterol is a waxy, fat-like substance that that's found in all the cells in your body. Your body needs some cholesterol to work ...
What is type 2 diabetes? If you have diabetes, your blood sugar levels are too high. With type 2 diabetes, this happens because your body does not make ...
Heart disease is the leading cause of the death in the United States. It is also a major cause of disability. But you can take steps to improve your health ...
Around half of American adults have high blood pressure (hypertension). Many of those people don't know they have it because there are usually no warning signs. ...
What is hyperthyroidism? Hyperthyroidism, or overactive thyroid, happens when your thyroid gland makes more thyroid hormones than your body needs. Your ...
What is blood glucose? Blood glucose, or blood sugar, is the main sugar found in your blood. It is your body's primary source of energy. It comes from ...
What is hypothyroidism? Hypothyroidism, or underactive thyroid, happens when your thyroid gland doesn't make enough thyroid hormones to meet your body's ...
What is the immune system? Your immune system is a complex network of cells, tissues, and organs. Together they help the body fight infections and other ...
We usually think of air pollution as being outdoors, but the air in your house or office could also be polluted. Sources of indoor pollution include: Mold ...
Food provides the energy and nutrients that babies need to be healthy. For a
baby, breast milk is best. It has all the necessary vitamins and minerals. Infant ...
What is infectious mononucleosis (mono)? Infectious mononucleosis (mono) is a disease caused by viruses.The most common cause is the Epstein-Barr virus ( ...
Inhalation injuries are acute injuries to your respiratory system and lungs. They can happen if you breathe in toxic substances, such as smoke (from fires), chemicals, ...
What is insomnia? Insomnia is a common sleep disorder. If you have it, you may have trouble falling asleep, staying asleep, or both. As a result, you ...
Your small intestine is part of your digestive system. It is a long tube that connects your stomach to your large intestine. Intestinal cancer is rare, but ...
What is intimate partner violence (IPV)? Intimate partner violence (IPV) is abuse that happens in a romantic relationship. The intimate partner could be ...
What is iron? Iron is a mineral that our bodies need for growth and development. Your body uses iron to make hemoglobin, a protein in red blood cells. ...
A stroke is a medical emergency. There are two types - ischemic and hemorrhagic. Ischemic stroke is the more common type. It is usually caused by a blood ...
What are joints? Your joints are places where two or more bones come together. Your shoulders, elbows, hips, knees, and knuckles are all joints. Your ...
What is Kawasaki disease? Kawasaki disease is a rare illness that usually affects small children. Other names for the disease are Kawasaki syndrome and ...
A kidney stone is a solid piece of material that forms in the kidney from substances in the urine. It may be as small as a grain of sand or as large as ...
