I'm a 51 yr old man; have been taking Synthroid in ever-increasing doses since age 43 when I was diagnosed. My problem is crushing insomnia. It started about the same time as the hypothyroidism, and sometimes gets better - but I have sleep crises about twice each month - ruins my productivity at home and work. I can go days without sleep. Sleep drugs help but leave me in bad shape. I want to know why this is happening and what treatment might work - I've seen many doctors, all of whom have been no help whatsoever! I've noticed that soy protein exacerbates the problem - must avoid it. Has anybody ever heard of this - or am I the only one on the planet with this set of problems? Thanks!