In Focus:

Banking Teeth for Stem Cell Therapy

Banking baby teeth or wisdom teeth—a practice that’s been around for about 10 years—is becoming more widely accepted in developed areas of the world, according to researchers. It involves cryopreserving teeth—and the dental stem cells they contain—for potential stem cell therapy in the future

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Teenage Brains Are So Hard to Understand

When Frances Jensen’s eldest son, Andrew, reached high school, he underwent a transformation. Frances’s calm, predictable child changed his hair color from brown to black and started wearing bolder clothing. It felt as if he turned into an angst-filled teenager overnight. Jensen, now the chair of the neurology department at...

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you should have an idea about retrograde ejaculation

Normally, semen exits the penis when a man ejaculates. Retrograde ejaculation causes some semen to travel backward into the bladder. Normal ejaculation forces semen—sometimes called ejaculate—through the man's urethra and out of the penis. The ejaculate can move out of the penis because a small muscle, called the bladder sphincter, closes the opening...

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Self-Harm on the Rise Among Teen Girls

Teen girls are much more likely to self-harm than boys, and the dangerous practice is on the rise. That's the conclusion of a new British study that also found a strong link between self-harm -- practices such as cutting or burning oneself -- and a higher risk of suicide. Researchers reviewed information from...

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