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Learning Center
How your brain works
Which part of your brain does what? Take a tour.
PSA test
Learn about this prostate cancer screening test, including why it's done, what to expect, risks and results.
Penis fracture: Is it possible?
Know the symptoms of this health concern.
Prostate laser surgery
Prostate laser surgery — Overview covers the risks and results of this treatment to relieve symptoms caused by an enlarged prostate.
Active surveillance for prostate cancer
Learn about why doctors may recommend active surveillance for prostate cancer and what to expect.
Testicular exam
Examining your testicles regularly can help you notice changes when they occur and identify testicular problems.
Circumcision (male)
Learn about the benefits and risks of surgery to remove the skin that covers the tip of the penis.
Concussion in children: What are the symptoms?
Whether your child's concussion is mild or severe, allow time to recover.
Premenstrual dysphoric disorder: Different from PMS?
Extreme moodiness, intense sadness or marked irritability in the days before your period — along with your usual PMS symptoms — could be PMDD.
Male masturbation: Does frequency affect male fertility?
Male masturbation has little effect on sperm count or quality.
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