Nutrition basics
Learning Center
Toothache: First aid
The most common cause of toothache is tooth decay. Find out about other causes of toothache and what to do for relief until you see your dentist.
Transurethral incision of the prostate (TUIP)
Learn about this procedure for treating an enlarged prostate, including how it's done and possible risks and benefits.
Transurethral microwave thermotherapy (TUMT)
Learn about this minimally invasive procedure for treating an enlarged prostate, including how it's done and possible risks and benefits.
Transurethral resection of the prostate (TURP)
Learn about this procedure used to treat urinary problems caused by an enlarged prostate gland.
Underweight? See how to add pounds healthfully
If you're underweight and not happy about it, try these tips to help you achieve your goal weight.
Undescended testicle
Learn about causes, complications and treatment of this condition in which one or both testicles aren't in the usual place within the scrotum.
Unexplained weight loss
Unexplained weight loss has many causes — some serious. Find out when losing weight without trying calls for a medical evaluation.
Unusual COVID-19 symptoms: What are they?
COVID-19 can cause a wide variety of symptoms, some more common than others. Learn about how COVID-19 can make you feel.
Urinary incontinence
Learn about possible causes of the loss of bladder control and what treatments are available for this problem.
Vagina: What's typical, what's not
Vaginal health is important. Use this information to protect your vaginal health and spot potential problems.
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