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Obesity
This community is dedicated to those of us struggling with obesity. Obesity is thought to be a significant risk factor in certain health conditions,...
Obsessive Compulsive Disorder (OCD)
Obsessive-compulsive disorder (OCD) is a psychiatric disorder, more specifically, an anxiety disorder. OCD is manifested in a variety of forms, but...
Oppositional Defiant Disorder (ODD)
Oppositional Defiant Disorder (ODD) an ongoing pattern of disobedient, hostile, and defiant behavior toward authority figures that goes beyond the...
Optic Nerve Hypoplasia
Optic nerve hypoplasia is a medical condition that results in underdevelopment of the optic nerves. Optic nerve hypoplasia can appear in one or both...
Oral Health and Dental Issues
You only have one set of teeth for life, so take good care of them. This is the place to discuss oral and dental care, good practices, dental office...
Oral Herpes
The herpes simplex virus is a virus that manifests itself in two common infections, each marked by painful, watery blisters in the skin, mouth, or...
Organ Transplants
An organ transplant is the transplantation of a whole or partial organ from one body to another (or from a donor site on the patient's own body), for...
Osteogenesis Imperfecta
Osteogenesis imperfecta is a group of genetic bone disorders. It is one of the brittle bone diseases. People with OI either have less collagen than...
Osteoporosis
Osteoporosis is a disease of bone in which bone mineral density is reduced, bone microarchitecture is disrupted, and the amount and variety of...
Other Heart Problems
The heart is a hollow, muscular organ in vertebrates responsible for pumping blood through the blood vessels by repeated, rhythmic contractions, or a...
Ovarian Cancer
Ovarian cancer is a malignant ovarian neoplasm (an abnormal growth located on the ovaries). It is the fifth leading cause of cancer death in women...