Mood Swings

Hi, I'm the wife of a Type 2 Diabetic. He's been diagnosed now for about 10 years. My query is; are mood swings associated with diabetes? He can be really stressed, verbally confrontational, rude and cruel. Mostly to me. At first I thought it was me being "sensitive", but now people are pointing it out to me and him.

Thanks in advance

Thanks for coming back to me.