Mental health
Learning Center
Low blood sodium in older adults: A concern?
For older adults, low blood sodium, known as hyponatremia, can cause death if left untreated.
Low sperm count
Having a low sperm count can make conceiving a child difficult, but not necessarily impossible. Learn about possible causes and treatment.
Lung nodules: Can they be cancerous?
Lung nodules are common. Most aren't cancer. Find out what tests might be recommended if you have a lung nodule.
Macrocytosis: What causes it?
Enlarged red blood cells (macrocytosis) can be due to many factors.
Male breast cancer
Breast cancer can affect anyone. Learn about the signs and symptoms of this cancer. Treatment most often involves surgery.
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.
Male hypogonadism
This condition affects the ability of men's bodies to produce enough testosterone or enough sperm or both.
Male infertility
Male infertility often plays a role when couples have trouble conceiving. Find out what causes male infertility and available options for treatment.
Male masturbation: Does frequency affect male fertility?
Male masturbation has little effect on sperm count or quality.
Male menopause: Myth or reality?
Male menopause is a catchy phrase, but it isn't accurate. Here's why.
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