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Your health care team will explain your choices. They can answer any questions you have. They'll work with you during all stages of your treatment.

Calcium is a mineral that helps us make strong bones and teeth. We spend 25 to 30 years building to a peak bone mass. Taking in enough calcium helps younger people build strong bones. Maintaining a safe calcium level helps older people limit bone loss.

Vitamin C is also called ascorbic acid and ascorbate. This vitamin has many benefits. Vitamin C is an antioxidant. This means that it fights cell damage in the body. Damaged cells increase the risk of cancer and heart disease. Vitamin C may help you resist these diseases.

Take this quiz to find out how much you know about cholesterol.

Learn about foods that can raise your cholesterol and foods that can help you lower it.

Making the decision to have sex is a complex choice. In school and around friends, you may be feeling pressure about it. But before you make a decision to have sex, make sure you think about what’s at risk.

Learn about the drug addiction process in teens.

The middle ear is an air-filled chamber that lies behind the eardrum. Pressure in the middle ear changes to match air pressure outside of the eardrum. When inside and outside pressures are balanced, the eardrum is flexible and normal hearing is more likely. Problems happen when air pressure in the middle ear drops. This is often due to a block in the eustachian (u-STA-shun) tube, the narrow channel connecting the ear with the back of the throat.

Diagnosing a middle ear problem takes several steps. You may be asked questions about your child's health history. Your child's eardrums will be examined. Tests may also be done. Read on to learn what you can expect.