LGBTQ health
Learning Center
Heart cancer: Is there such a thing?
Although heart tumors do occur, the vast majority of them are noncancerous (benign).
HPV infection: A cause of cancer in men?
Learn what types of cancer human papillomavirus can cause and how you can lower your risk.
HER2-positive breast cancer: What is it?
HER2-positive breast cancer tends to be more aggressive than other types of breast cancer. Treatments that target HER2 are very effective.
Gallbladder polyps: Can they be cancerous?
The size of gallbladder polyps can be a useful predictor of whether they're cancerous.
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.
Foot swelling during air travel: A concern?
Swelling of the leg or foot while flying is common and usually harmless.
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.
Discolored semen: What does it mean?
Find out what causes discolored semen.
Digestion: How long does it take?
Digestion takes about two to five days, depending on your system.
Did the definition of Alzheimer's disease change?
What the change in the research definition of Alzheimer's disease means for you.
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