What are STDs? Sexually transmitted diseases (STDs), or sexually transmitted infections (STIs), are infections that are passed from one person to another through sexual contact. How common are STDs? STDs are very common. Key health statistics: More than 1 million …


When you think of testosterone, what comes to mind? Macho men? Aggressive, impatient, type A behavior? Road rage? Violence? Testosterone’s role in bad behavior is largely a myth. What’s more, testosterone plays other important roles in health and disease. Testosterone …

Facts about male fertility Male infertility can result of physical, hormonal, genetic, or immunologic problems, a chronic illness or any condition that hinders sexual activity. A semen analysis is the first step to see if there is male factor infertility. …