Dr. John Lee's website offers a wide range of information about natural hormones and hormone balance for women and men, resources for finding out more, as well as a variety of books, audio and video tapes. Over a decade ago, he first published his startling conclusions about conventional hormone replacement therapy (HRT): synthetic hormones don't work as predicted and, worse, they pose a health threat to women. His findings touched off a storm of controversy. But years later, research has proved him right.