Hi again Denise.
Does your husband write down what his blood sugars are doing? Are they in fact moving out of range after alcohol? Has he advice on dealing with this?
Even so, I would be concerned that the blood sugar levels could be irrelevant to his moods because as people before me have said, I would have thought alcohol a much larger cause of 'nasty' moods. If you need to convince yourself, you could try to keep a diary of a) when BS control is becoming a problem b) when he has drunk and c) when the moods are, and see which ones match up. A Diabetic support nurse or DAPHNE course (talk to your local hospital) could help if BS control, especially after drinking, needs to be better.
On the other hand, I detect from your tone that you might already be convinced that the cause is alcohol rather than BS. If this is the case, seek
advice. There is no excuse for behaving badly towards someone and if this
has become a pattern, it is a most unfair one and needs to be confronted.
I dont know anything about your husband so please excuse the word alcohol here if it is nit appropriate, but perhaps, alcoholic or not, Alcoholics Anonymous could point you in the right direction for help with any drink-related behavioural issues?