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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

Breast Cancer: Introduction What is cancer? Cancer starts when cells in the body change (mutate) and grow out of control. Your body is made up of tiny building blocks called cells. Normal cells grow when your body needs them, and die when your body doesn't need them any longer

Fever in Children What is a fever? Most doctors 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 temperature. The body

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

Delivery Delivery is the moment when the baby and the placenta leave your body. To get ready for the delivery, you may be moved into a birthing room or delivery room. Or you may stay in the same room for both labor and the birth. Partners are encouraged to be actively involved in

Anatomy of the Breasts Each breast has 15 to 20 sections, called lobes. They are arranged like the petals of a daisy. Each lobe has many smaller structures called lobules. These end in dozens of tiny bulbs that can make milk. The lobes, lobules, and bulbs are all linked by thin

Navigating Life After a Loved One's Suicide Grief is complicated. You may have many different feelings at once. It can be long-lasting, too. Grieving the death of someone who died by suicide is in many ways like other forms of grief. But you may have different challenges and

Fire Safety and Burns Overview A burn injury usually results from an energy transfer from a heat source to the body. There are many types of burns, including: Thermal burns. These burns are caused by heat sources that raise the temperature of the skin and tissues and cause tissue

Refractive Errors in Children What is normal vision? To understand how certain problems can affect your child's vision, it’s important to know how normal vision happens. For children with normal vision, the following things occur in this order: Light enters the eye through the

Components of Food If you are trying to make heart-healthy changes to your lifestyle and diet, it's helpful to know some basics about nutrition, starting with the components of food. Facts about calories You need enough calories to give you energy, but no more than you can burn