It was mind blowing reading that it can last for anywhere between 22 months to 4 years. I can imagine that it would cause a real problem where medical research is concerned, I tried finding some medical papers that were published on it, but wasn't able to. I don't doubt the authenticity of the testimonials of women who have experienced this, it just goes against everything we know about the basic biology of human reproduction. It will also heat up the debate about abortion especially if the fetus at the very early stages (conception) can 'decide' on whether the environment and psychology of the host is suitable to sustaining life. That, I think, will open up a can of worms in itself. The human body and will to survive truly is amazing!