I am a 29-year-old healthy guy who faces a little "mystery" in my life. I recently discovered that I experienced the retraction of my testicles when I engage in sexual activities, including ...

A 12-year-old boy presents to his primary care physician with a three-hour history of severe pain on the right side of his scrotum. Examination shows the right side of the scrotum to be swollen, red ...

A simple breakdown of the cremaster reflex, why it happens, and the role it plays in the body’s protection mechanisms. Remember the torture memos? The boat strike memos may be worse. 'Taylor Swift is ...