Fitness basics
Learning Center
Coronary calcium scan
This heart CT test can show calcium deposits in the blood vessels. Know how the findings relate to your heart disease risk.
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.
Cystoscopy
During cystoscopy, your doctor examines the inside of your bladder using a special instrument that's inserted into the bladder through the urethra.
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
Dense breast tissue: What it means to have dense breasts
Find out what it means if your mammogram report says you have dense breast tissue. Learn about additional breast cancer screening tests to consider.
Diagnosing Alzheimer's: How Alzheimer's is diagnosed
Even though there isn't a cure, early diagnosis of Alzheimer's dementia is important.
Dietary supplements for erectile dysfunction: A natural treatment for ED?
Some dietary supplements for erectile dysfunction might work and some might be dangerous. Get the facts.
Domestic violence against men: Recognize patterns, seek help
Domestic violence against men is real. Find out how to break the cycle.
Doppler ultrasound: What is it used for?
A Doppler ultrasound measures blood flow and pressure in blood vessels.
Dry orgasm
It's possible for men to reach sexual climax without ejaculating. Learn about the possible causes.
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