Antibodies are proteins made by the body's natural defense system (immune system) to fight foreign substances, such as bacteria. Antibodies attach themselves to the foreign substance, allowing other immune system cells to attack and destroy the substance. The surfaces of viruses, fungi, and bacteria contain markers...

Diabetes is a condition in which sugar (glucose) remains in the blood rather than entering the body's cells to be used for energy. This results in high blood sugar. Over time, high blood sugar can damage many body systems. Symptoms of diabetes include increased thirst and frequent urination (especially at night)...

Nonsteroidal anti-inflammatory drugs (NSAIDs) are used to relieve pain and fever and to reduce swelling and inflammation caused by injury or diseases such as arthritis. Aspirin, ibuprofen, ketoprofen, and naproxen are commonly used NSAIDs. NSAIDs may cause side effects. The most common are stomach upset, heartburn, and...

Covers causes and symptoms of asthma in teens and adults. Includes info on avoiding triggers and treating attacks. Looks at treatment with controller medicine. Covers delivery systems that include metered-dose and dry powder inhalers and nebulizers.

What is alcohol use disorder? Alcohol use disorder means that a person drinks alcohol even though it causes harm to themselves or others. It can range from mild to severe. People with this disorder may find it hard to control their alcohol use. Over time, drinking too much alcohol may cause health problems, like liver...

Ultrasound is a test that uses reflected sound waves to produce an image of organs and other structures in the body. It does not use X-rays or other types of possibly harmful radiation. For ultrasound testing, gel or oil is applied to the skin to help transmit the sound waves. A small, handheld instrument called a...

Discusses causes and symptoms of asthma in children. Looks at treatment with medicine such as inhaled corticosteroid and albuterol. Discusses avoiding triggers and treating attacks. Covers using nebulizers, metered-dose with spacer and dry powder inhalers.

Covers birth control methods, including the pill, skin patch, Depo-Provera shot, condoms, cervical cap, and diaphragm. Provides questions to help you decide the right birth control method for you. Covers emergency contraception (the morning-after pill).

Includes causes and symptoms of heart disease. Looks at cholesterol, hypertension, and risk of heart attack. Covers diet, physical activity, and treatment with medicines, angioplasty, and bypass surgery. Includes how to help prevent heart disease.

Briefly discusses common sexually transmitted infections. Offers interactive tool to help decide when to seek care.

HIV (human immunodeficiency virus) is a virus that attacks the immune system, the body's natural defense system. Without a strong immune system, the body has trouble fighting off disease. HIV infection is treated with medicines that slow or stop the damage to the immune system. If it's not treated, in time HIV will...

Covers type 1 diabetes, also called juvenile diabetes or insulin-dependent diabetes. Describes how pancreas regulates blood sugar (glucose) levels. Includes info on hypoglycemia and hyperglycemia. Discusses treatments, including insulin.

Osteoporosis is a disease that makes your bones thin, brittle, and easy to break. It's related to the loss of bone mass that happens as a natural part of aging. It's most common in women who have gone through menopause, but it can also occur in men. As osteoporosis gets worse, it can lead to broken bones in the hip...

Habits are hard to break. That's why the sooner in life we build good, healthy habits, the easier it is to keep them and stay as healthy as possible. And when good habits are in place, it's easier to resist bad ones. The most important thing to remember is that you are your child's role model. Your habits affect your...

Inner strength is the ability to cope with the stressful situations in life. This is often called "resilience." Building inner strength begins with simple actions or thoughts that your child practices, such as planning for what to do next and learning to accept change. Inner strength can help a child face problems...

What is substance use disorder? Substance use disorder means that a person uses substances even though it causes harm to themself or others. This disorder can range from mild to severe. It can develop from the use of almost any type of substance. This includes: Alcohol. Marijuana and other drugs. Prescription medicines...

Briefly discusses symptoms that may show a serious problem during pregnancy. Covers vaginal bleeding, fever, and swelling. Describes emergency symptoms like shock, seizures, and leaks from your vagina. Offers interactive tool to help decide when to seek care. Also offers home treatment tips.

What is an environmental illness? An environmental illness can occur when you are exposed to toxins or substances in the environment that make you sick. These health hazards may be found where you live, work, or play. Maybe you have headaches that only occur on weekends. Or maybe you began to feel sick and got a rash...

Depression is an illness that makes you feel sad, lose interest in things you used to enjoy, withdraw from others, and have little energy. It's more than normal sadness, grief, or low energy. Most people get better with medicine, counseling, or a combination of the two. After you have had an episode of depression, you...

X-rays are a form of radiation, like light or radio waves, that can be focused into a beam, much like a flashlight beam. Unlike a beam of light, though, X-rays can pass through most objects, including the human body. When X-rays strike a piece of photographic film, they can produce a picture. Dense tissues in the body...

What are grief and grieving? Grief is a natural response to the loss of someone or something very important to you. The loss may cause sadness and may cause you to think of very little else besides the loss. The words sorrow and heartache are often used to describe feelings of grief. Grieving is the process of emotional...

Each Decision Point is designed to guide you through a key health decision. Decision Points combine medical information with your personal values to help you make a wise health decision. See a list of: Decision Points about medical tests. Decision Points about medicines. Decision Points about surgeries. Decision Points...

All medicines can cause side effects. Many people don't have side effects. And minor side effects sometimes go away after a while. But sometimes side effects can be a problem or can be serious. If you're having problems with side effects, talk to your doctor. Your doctor may be able to lower your dose or change to a...

Describes heart failure (congestive heart failure). Discusses common causes like hypertension and coronary artery disease. Has info on symptoms. Covers diagnostic tests and treatments. Discusses heart failure classification system and stages of CHF.

What is food poisoning? Food poisoning is an illness caused by eating foods that have harmful germs in them. These germs are mostly found in raw meat, chicken, fish, and eggs, but they can spread to any type of food. They can also grow on food that's left out on counters or outdoors or is stored too long before you eat...