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When you're short of breath, it's hard or uncomfortable for you to take in the oxygen your body needs. You may feel as if you're not getting enough air. Sometimes ...
When you breathe in, the air travels down through your trachea (windpipe). It then goes through two tubes to your lungs. These tubes are your bronchi. Bronchial ...
A bruise is a mark on your skin caused by blood trapped under the surface. It happens when an injury crushes small blood vessels but does not break the ...
What is bullying? Bullying is when a person or group repeatedly harms someone on purpose. It can be physical, social, and/or verbal. It is harmful to ...
A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires ...
A bursa is a small, fluid-filled sac that acts as a cushion between a bone and other moving parts, such as muscles, tendons, or skin. Bursitis occurs when ...
What is C. diff? C. diff is a bacterium that can cause diarrhea and more serious intestinal conditions such as colitis. You may see it called other names, ...
What is caffeine? Caffeine is a bitter substance that occurs naturally in more than 60 plants including: Coffee beans Tea leaves Kola nuts, which are ...
What is calcium and why do I need it? Calcium is a mineral, a nutrient that you need (in small amounts) to keep your body healthy. You have more calcium ...
Campylobacter infection is a common foodborne illness. You usually get it from eating contaminated food, especially raw or undercooked poultry. You can also get it ...
Cancer begins in your cells, which are the building blocks of your body. Normally, your body forms new cells as you need them, replacing old cells that die. ...
You have many choices to make about your cancer treatment. One choice you might be thinking about is complementary and alternative medicine (CAM). CAM is ...
What is cancer chemotherapy? Cancer chemotherapy is a type of cancer treatment. It uses medicines to destroy cancer cells. Normally, the cells in your ...
Immunotherapy is a cancer treatment that helps your immune system fight cancer. It is a type of biological therapy. Biological therapy uses substances that are made ...
Cancer is a group of related diseases. In all types of cancer, some of the body's cells begin to divide without stopping and spread into surrounding tissues. ...
Learning to live with cancer Cancer is a common disease. Almost 40 percent of Americans will be diagnosed with cancer during their lifetimes. Even though ...
Canker sores are small, round sores in your mouth. They can be on the inside of your cheek, under your tongue, or in the back of your throat. They usually have ...
Metabolism is the process your body uses to make energy from the food you eat. Food is made up of proteins, carbohydrates, and fats. Chemicals in your digestive ...
What are carbohydrates? Carbohydrates, or carbs, are sugar molecules. Along with proteins and fats, carbohydrates are one of three main nutrients found ...
Carbon monoxide (CO) is a gas that has no odor or color. But it is very dangerous. It can cause sudden illness and death. CO is found in combustion fumes, such ...
