Fitness basics
Learning Center
Is a home sperm test useful?
Using a home sperm test to check your fertility may not provide a clear answer.
Brain AVM (arteriovenous malformation)
Tangled blood vessels in the brain affect typical blood flow in this rare condition. Learn more.
Penile implants
Explore your choices and learn what to expect from penile implant surgery.
Withdrawal method (coitus interruptus)
The withdrawal method — pulling the penis out of the vagina before ejaculation — isn't the most effective birth control. Learn about the pros and cons.
Low sperm count
Having a low sperm count can make conceiving a child difficult, but not necessarily impossible. Learn about possible causes and treatment.
Prostate cancer prevention: Ways to reduce your risk
Choose a healthy diet and add exercise to your daily routine in order to reduce your risk of prostate cancer. Learn more about prostate cancer prevention.
Orchitis
This inflammation of one or both testicles can cause pain and infertility. It's usually caused by a bacterial infection or the mumps virus.
Varicocele
Find out how this condition involving the enlargement of veins in the scrotum can affect sperm quality and production.
Prostate cancer screening: Should you get a PSA test?
Learn about the pros and cons of the PSA test so you're ready to talk about prostate cancer screening with your doctor.
Mayo Clinic Minute: Why concussion screening is important
Concussion screening can help determine when athletes can return to play.
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