I was very happy to find out from my blood tests that I'm perfectly healthy. So - it must be some other reason that I get so tired. I know my bad back can be tiring but also I'm what would have been called at one time 'nervy'. Not that being nervy ever stopped me doing anything but it does take it out of me, mainly because I hide it successfully which I suppose is part of the problem but who wants to go around whinging all the time - not me. Anyway, the doctor has put me on Sertraline. If it does the job I don't care that it is 'giving in' to my emotions. I'm sick and tired of feeling tired!!! We'll see in a few weeks if this is the solution.