Diane, You were trrated for breast cancer too, right? Did you have radaition for that too? I had radiation for oral cancer and then, after 4 months, for breast cancer and let me tell you it took me a looong time to get my energy back after that second radiation. I am 3 years out now and I would say it took about one and 1/2 years after the second radiation.

Still, the only time when I was a ways out that I was falling asleep midafternoon was when it turned out my thyroid had completely shut down. So I would definitely get that checked, if you haven't already.

I work with someone with fibromyalgia and my understanding is one of the symptoms of that can be severe fatigue too. Could be that that is causing the problem.

Nelie