Fertility
Learning Center
Low sperm count
Having a low sperm count can make conceiving a child difficult, but not necessarily impossible. Learn about possible causes and treatment.
Narcolepsy
Learn more about this sleep disorder that causes periods of involuntary sleep, sleep paralysis and early rapid eye movement (REM) sleep.
Retractile testicle
Find out about this condition that allows the testicle to move between the scrotum and groin.
Male depression: Understanding the issues
Men may cope with depression in unhealthy ways. Depression in men often is not diagnosed or treated. This can lead to serious and sometimes tragic results.
Mayo Clinic Minute: Are you keeping your child as safe as possible in the car?
Find out how long to use a rear-facing car seat and how it can protect your child.
Childhood vaccines: Tough questions, straight answers
When it comes to childhood vaccines, misinformation is common. Get the facts about vaccine safety from health experts.
COVID-19 vaccines: Get the facts
Find out about the COVID-19 vaccines, the benefits of COVID-19 vaccination and the possible side effects.
How well do face masks protect against COVID-19?
Face masks can help slow the spread of coronavirus disease 2019 (COVID-19). Learn about mask types, which masks to use and how to use them.
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