Let's go back to the beginning. One of the oldest treatment in fertility care is insemination of sperm. Intrauterine insemination (IUI) has been around for decades. IUI involves taking a man's ejaculated semen, washing and concentrating it and placing it into a woman's uterus on the day she is ovulating. It's cheaper and less invasive than IVF and we have hundreds of IUI babies in our practice. Who should do it and does it work?