Third trimester
Learning Center
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.
Nicotine dependence
Nicotine dependence can be tough to kick, but treatments and resources are available to boost your chances of success.
Multiple sclerosis
This nervous system disorder causes a range of symptoms — and while there's no cure, it's possible to have long periods of remission.
Monoclonal gammopathy of undetermined significance (MGUS)
When bone marrow produces an unusual protein in the blood, it can sometimes lead to certain types of blood cancer.
Mold allergy
Coughing, sneezing and itchy eyes often accompany this common allergy. Find out how to treat this condition and help keep it under control.
Molar pregnancy
This rare pregnancy complication requires early treatment. Learn more about diagnosis and treatment of this type of pregnancy loss.
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 hypogonadism
This condition affects the ability of men's bodies to produce enough testosterone or enough sperm or both.
Male breast cancer
Breast cancer can affect anyone. Learn about the signs and symptoms of this cancer. Treatment most often involves surgery.
Low sperm count
Having a low sperm count can make conceiving a child difficult, but not necessarily impossible. Learn about possible causes and treatment.
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