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Learning Center
Male masturbation: Does frequency affect male fertility?
Male masturbation has little effect on sperm count or quality.
Dry mouth
With this condition, also known as xerostomia, the salivary glands in the mouth don't make enough saliva to keep the mouth wet.
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
Post-vasectomy pain syndrome
Learn about post-vasectomy pain syndrome (PVPS) — How it happens after a vasectomy, tests to diagnose it and treatment options.
Ozone air purifiers: Can they improve asthma symptoms?
Ozone air purifiers don't reduce asthma symptoms. In fact, they can make asthma worse.
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
Broken collarbone
This common injury is usually the result of falling, playing sports or being in a traffic accident.
Varicocele
Find out how this condition involving the enlargement of veins in the scrotum can affect sperm quality and production.
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