Fertility
Learning Center
Withdrawal method (coitus interruptus)
The withdrawal method — pulling the penis out of the vagina before ejaculation — isn't the most effective birth control. Learn about the pros and cons.
Wolff-Parkinson-White (WPW) syndrome
This heart condition present at birth causes a fast heartbeat. Rarely, it can cause sudden cardiac death. Know the symptoms and how it's treated.
Women's sexual health: Talking about your sexual needs
Women's sexual health — Tips for talking about your sexual needs and achieving fulfillment.
Working during pregnancy: Do's and don'ts
Working during pregnancy? Here's how to have a healthy, productive nine months on the job.
Wrinkle creams: Your guide to younger looking skin
Do over-the-counter products work? Learn more about whether peptides, retinols and other anti-wrinkle cream ingredients help improve your skin.
Wrist blood pressure monitors: Are they accurate?
Devices that measure blood pressure at the wrist may be an option for some people. Know how to position a wrist monitor properly.
Wrist pain
Wrist pain can be caused by many types of problems, ranging from sprains to arthritis. An accurate diagnosis is crucial to determine the proper treatment.
X-linked agammaglobulinemia
This genetic disease weakens the immune system, mainly in males, and leads to having infections often.
X-ray
This quick and simple imaging test can spot problems in areas such as the bones, teeth and chest. Learn more about this diagnostic test.
X-ray during pregnancy: Is it safe?
Learn when an X-ray during pregnancy might cause harm and how to avoid it.
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