Good morning SM and welcome to the site.
I agree with Chris in that it is unlikely to be the actual cancer causing your tiredness but the stress of dealing with the knowledge that you have it.
Has it affected your sleep pattern for instance. Are you lying there at night worrying about it or waking early, and then not being able to get back to sleep because it is on your mind?
Not dismissing in any way how you feel. It affects us all differently, I'm just trying to put a different slant on it.
Was Active Surveillance one of the options offered to you?
My husband had permanent seed brachytherapy about 4 years ago (although his PSA was lower than yours, his Gleason was 3+4=7).
This appears to have been successful as he has just been signed off into the care of our GP by the Royal London Hospital.
It is a very stressful time.
You constantly wonder where it is all going to end and whether the treatment you opt for is the best one for you.
It does, strangely, get a little easier to cope with once you have made a decision and treatment starts because that first uncertainty is behind you.
Try not to fret about it all (easy for me to say I know)
Best Wishes
Sandra
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