Nutrition basics
Learning Center
Circumcision (male)
Learn about the benefits and risks of surgery to remove the skin that covers the tip of the penis.
Coconut water: Is it super hydrating?
This drink is promoted as "super hydrating." But is it really any better than plain water?
Coffee and health: What does the research say?
Has coffee gotten a bum rap? Can it be part of a healthy diet?
Cryotherapy for prostate cancer
Find out how very cold temperatures are used to freeze tissue and treat prostate cancer. Learn about the side effects and potential benefits of cryotherapy.
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
Depression and anxiety: Can I have both?
Depression and anxiety commonly occur together and have similar treatments: counseling (psychotherapy) or medication, such as antidepressants, or both.
Diabetes: How do I help protect my liver?
How to care for your liver if you have diabetes.
Diabetic retinopathy
Good diabetes control and regular exams can help prevent this diabetes complication that affects the eyes. Find out how.
Diarrhea
Diarrhea: Symptom — Overview covers definition, causes of acute and chronic diarrhea.
Diet soda: How much is too much?
Diet soda may help you cut calories, but other low-calorie options abound.
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