Fitness basics
Learning Center
Blood donation
Find out what to expect during blood donation and how your blood will be used to help others.
Blood in semen
Finding blood in your semen can be alarming, but the cause is usually benign. Find out possible causes and when to see a doctor.
CBD: Safe and effective?
Interested in using CBD? Here's what you need to know about the risks and benefits of using this drug.
Candida cleanse diet: What does it treat?
Candida cleanse diets that replace processed food with fresh foods improve health but don't necessarily stop yeast overgrowth.
Cholesterol-lowering supplements may be helpful
Diet and exercise are proven ways to reduce cholesterol. Cholesterol-lowering supplements might help, too.
Circumcision (male)
Learn about the benefits and risks of surgery to remove the skin that covers the tip of the penis.
Coconut oil: Can it cure hypothyroidism?
This oil has been touted by some as a cure for hypothyroidism. Truth or hype?
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.
Curcumin: Can it slow cancer growth?
Some research suggests that curcumin may help prevent or treat cancer.
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
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