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Health Library A to Z


  • Obesity in Adolescents
  • Children who are inactive—spending time watching TV or sitting at a computer—are at higher risk for obesity, especially when their diet contains lots of high-calorie foods and beverages.

  • Old Makeup Can Cause Serious Eye Infections
  • Most cosmetics have long shelf lives, but since they can be contaminated with bacteria after only one use, it is a good idea to keep track of how long you have been using products, such as mascara and eyeliners.

  • Omphalocele
  • An infant with an omphalocele has a portion of the abdominal organs protruding through an opening in the muscles near the umbilical cord.

  • Oppositional Defiant Disorder
  • This behavior disorder is characterized by uncooperative, defiant, negativistic, irritable, and annoying behaviors toward parents, peers, teachers, and other authority figures.

  • Oral Health
  • Detailed information on oral health problems and teens

  • Orthodontics/Braces for Children
  • Orthodontics is the dental specialty that focuses on the development, prevention, and correction of irregularities of the teeth, bite, and jaws.

  • Osteosarcoma (Osteogenic Sarcoma) in Children
  • Osteosarcoma is cancer of the bone. The cancer (malignant) cells make immature bone cells (osteoid). Osteosarcoma is rare, but it is the most common type of bone cancer in children and teens. It is most common when teens have growth spurts. That is between the ages of 13 and 16.

  • Overuse Injuries
  • Detailed information on overuse injuries in children, including jumper's knee, patellar tendonitis, little leaguers' elbow, little leaguers' shoulder, osteochondritis dissecans, Sever's disease, shin splints, Sinding-Larsen-Johansson disease, spondylolisthesis, and spondylolysis

  • Overview of Diabetes Mellitus
  • Diabetes is a chronic disease that involves the regulation of blood sugar and occurs in two different forms, type 1 and type 2.