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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

Safer Sex Guidelines What is safe sex? Having sex with only one partner who only has sex with you when neither of you has a sexually transmitted infection (STI) is believed to be safe. But many health care professionals believe that the only way to be truly safe is not to have

Diet for Lactose Intolerance What is lactose intolerance? Lactose is the name of the sugar found in milk. Lactose intolerance occurs when your body can't break down all the lactose in the foods you eat. Symptoms of lactose intolerance include: Diarrhea. Gas. Bloating. Stomach

Common Benign Lumps What are some common types of benign breast lumps? Noncancer (benign) breast lumps can have many causes. Two of the most common causes of benign single breast lumps are cysts and fibroadenomas. Several other conditions can also appear as lumps. These are fat

Maintaining Weight Loss Benefits of maintaining weight loss Losing weight is hard for many people. But it's even more challenging to keep the weight off. Many people who lose a large amount of weight have problems keeping it off over time. One theory is that people who eat fewer

Pregnancy and Oral Health During your pregnancy, you may worry about your waistline and fret about food. You take prenatal vitamins, see your healthcare provider often, get regular exercise, and stay away from alcohol and smoking—all in the name of a healthy pregnancy.And

Ear, Nose, and Throat Facts What is the ear? The ear is the organ of hearing and balance. The ear is made up of: External or outer ear. This includes: Pinna or auricle. This is the outside part of the ear. External auditory canal or tube. This is the tube that connects the outer

Medical Genetics: Types of Genetic Changes The human body has about 20,000 different genes in each cell. Genes are located on chromosomes, which are stick-shaped structures in the middle of the cell (nucleus). Each cell usually has 46 chromosomes grouped in 23 pairs. Each gene

Birth Injuries What is a birth injury? Sometimes during the birth process, the baby may suffer a physical injury that impairs function or structure of their body. This is sometimes called birth trauma or birth injury. It can happen during labor, delivery, or after delivery. Birth

Topic Index - Ear, Nose, and Throat Ear, Nose, & Throat Home Ear Disorders Anatomy and Physiology of the Ear Common Childhood External Ear Problems Otitis Externa (Swimmer's Ear) Foreign Bodies in the Ear, Nose, and Airway Otitis Media (Middle Ear Infection) Mastoiditis Hearing