First trimester
Learning Center
Calcium supplements: When should they be taken?
Timing matters when taking these supplements. Learn how to take them.
Can vitamins help prevent a heart attack?
Study results are mixed on whether vitamins can prevent heart disease. Find out more.
Implantation bleeding: Common in early pregnancy?
Implantation bleeding is a common early pregnancy symptom. Understand why it happens.
Priapism
Understand the symptoms, possible causes and treatment of prolonged erection of the penis, including when to seek emergency care.
Klinefelter syndrome
This genetic disorder occurs when a male is born with an extra copy of the X chromosome and may result in low testosterone production and infertility.
PSA test
Learn about this prostate cancer screening test, including why it's done, what to expect, risks and results.
Fasting diet: Can it improve my heart health?
Periodically following a fasting diet may have heart-health benefits. Find out more.
Male hypogonadism
This condition affects the ability of men's bodies to produce enough testosterone or enough sperm or both.
Retrograde ejaculation
Learn about the symptoms and treatment options for this condition that can cause male infertility.
Erectile dysfunction: Nonoral treatments
Get the facts about shots, penis pumps and other ED treatments that don't involve taking medicine by mouth.
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