A collection of organizations providing health information arranged by topic. Also available in alphabetical order.
Ulcerative Colitis
- American Gastroenterological Association
- American Society of Colon and Rectal Surgeons
- Crohn's & Colitis Foundation of America
- National Institute of Diabetes and Digestive and Kidney Diseases
Uncommon Infant and Newborn Problems
- American Academy of Pediatrics
- Eunice Kennedy Shriver National Institute of Child Health and Human Development
- KidsHealth (Nemours Foundation)
Underage Drinking
- Alcoholics Anonymous
- National Institute on Alcohol Abuse and Alcoholism
- Partnership to End Addiction
Understanding Medical Research
Ureteral Disorders
Urethral Disorders
Urinalysis
Urinary Incontinence
- American Urogynecologic Society
- National Association for Continence
- National Institute of Diabetes and Digestive and Kidney Diseases
Urinary Tract Infections
Urine and Urination
Usher Syndrome
- Foundation Fighting Blindness
- National Eye Institute
- National Institute on Deafness and Other Communication Disorders
Uterine Cancer
- American Cancer Society
- Department of Health and Human Services, Office on Women's Health
- National Cancer Institute
Uterine Diseases
- American College of Obstetricians and Gynecologists
- Department of Health and Human Services, Office on Women's Health