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The Digestive System: An Overview What is digestion? Food and drink must be changed into smaller molecules of nutrients to be absorbed into the blood and carried to cells throughout the body. Digestion is the process by which food and liquid are broken down into smaller parts

Obesity in Children and Teens What is obesity in children and teens? Obesity is when a person has too much body fat. Without treatment, obesity can become a serious, long-term disease. What causes obesity in a child or teen? In many ways, childhood obesity is a puzzling disease

Cancer and Tobacco How are tobacco and cancer linked? Using tobacco makes it more likely that you will get cancer. This includes lung, mouth, throat, bladder, and other cancers. In fact, 1 out of 5 people with cancer in the U.S. got it from smoking. All tobacco products, such as

Skin Pigment Disorders What are skin pigment disorders? Skin color is determined by a pigment (melanin) made by specialized cells in the skin (melanocytes). The amount and type of melanin determines a person's skin color. What is the function of melanin? Melanin's role is to

Fever in Children What is a fever? Most healthcare providers define a fever as a temperature of 100.4°F (38°C) or higher when taken rectally or 100°F (37.8°C) or higher when taken by mouth. You might get slightly different numbers depending on how you take your child's

Knee Pain and Problems Brief anatomy of the knee The knee is a vulnerable joint. It bears a great deal of stress from everyday activities, such as lifting and kneeling, and from high-impact activities, such as jogging and aerobics. The knee is formed by these parts: Tibia. This

Facts About Diabetes What is diabetes? When you have diabetes, your body has a problem with insulin. It doesn't make enough insulin or can't use the insulin it makes (insulin resistance). Insulin is a hormone released by the pancreas. It helps sugar (glucose) enter your cells to

Exercise for Cancer Prevention People who are overweight or obese have a higher risk of getting certain cancers. This includes cancers of the: Breast (for people past menopause). Endometrium. Ovary. Kidney. Liver. Rectum. Esophagus. Colon. Pancreas. Stomach. Thyroid. Gallbladder

Germ Cell Tumors (GCTs) in Children What are germ cell tumors in children? A type of cell that forms as a fetus (also called unborn baby or embryo) develops is called a germ cell. Germ cells are the cells that make the eggs (ova) in females and the sperm in males. Germ cell

Preventing Obesity in Children, Teens, and Adults Facts about obesity Obesity is a long-term (chronic) disease. It affects growing numbers of children, teens, and adults. Obesity rates among children in the U.S. have doubled since 1980. They have tripled for teens. About 19 out