I would agree that the difference could be the statins. They don't affect everyone in the same way, so it's difficult to be certain. However, it's a good thing your blood sugars have dropped. Make sure you talk to your doctor/DSN/hospital clinic about this next time you see them so they are in the picture, as they are likely to want you to take statins again. Whether you do is, of course, up to you, but as someone who suffered memory loss and consequently redundancy because of statins, I don't believe doctors take the side effects of statins seriously enough. If statins worsen your blood sugar results, that's not a good thing. I knew they could raise blood sugars when I took them but that didn't worry me because I was told the result for me (as a type 1) might be that I needed slightly more insulin. As it happened, I didn't . We aren't all the same .
My husband also has a benign prostate problem, the drugs for which make him tired, so I can understand that rising sugar levels plus extra tiredness must have been pretty awful. I think you need to talk about this with your doctor too. Dealing with doctors etc is a problem in itself, at times, isn't it ?