Fitness basics
Learning Center
Did the definition of Alzheimer's disease change?
What the change in the research definition of Alzheimer's disease means for you.
Digestion: How long does it take?
Digestion takes about two to five days, depending on your system.
Discolored semen: What does it mean?
Find out what causes discolored semen.
Diuretics and gout: What's the connection?
This treatment for high blood pressure can raise the risk of arthritis. Find out why and what you can do about it.
Does older age increase the risk of atrial fibrillation?
Learn how the risk of getting this common heart rhythm condition can increase with age.
Enlarged prostate: Does diet play a role?
Lifestyle factors such as diet appear to play a role in benign prostatic hyperplasia (BPH). See what lifestyle changes may help with symptoms.
Exercise and illness: Work out with a cold?
Play it smart. Ease up on exercise if you have a cold.
Fainting during urination (micturition syncope): What causes it?
Fainting during or immediately after urination, called micturition syncope, is a rare occurrence in healthy individuals.
Foot swelling during air travel: A concern?
Swelling of the leg or foot while flying is common and usually harmless.
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.
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