Aerobic exercise
Learning Center
Green stool
Learn about the possible causes of green stools in adults and infants.
Glucosamine: Does it protect cartilage in osteoarthritis?
Glucosamine manufacturers claim their products slow or stop cartilage damage in osteoarthritis.
Gallbladder cleanse: A 'natural' remedy for gallstones?
A gallbladder cleanse is a popular alternative remedy for gallstones. But does it work?
Frostbite
Learn how to prevent cold injury to the skin when outdoors in freezing temperatures and how to treat and recover from frostbite.
Frequent sex: Does it protect against prostate cancer?
Some studies have suggested that frequent ejaculation may reduce the risk of prostate cancer. But other research hasn't supported this idea.
Flaxseed: Is ground better than whole?
Nutrition experts recommend ground flaxseed over whole flaxseed. Find out why.
External beam radiation for prostate cancer
Learn about the risks and results of this procedure, which is used to deliver radiation therapy for prostate cancer.
Exercise: How much do I need every day?
Find out how much exercise you need and how to get it.
Exercise intensity: How to measure it
To get the most out of exercising, aim for moderate to vigorous exercise intensity. See how to judge your exercise intensity.
Erectile dysfunction: Viagra and other oral medications
Get the facts on medicines that are taken by mouth for ED.
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