These days, I'd say I was potentially pretty violent, depending on my bloodsugar. When I was a teenager, I would only get angry when I had to, someone really had to pee me off to get a reaction. These days, if the diabetes is playing up, then just don't poke the bear. Seriously, you'll never see anyone handle anger so efficiently as a diabetic. It's like a switch, the last time I flicked it was last Friday after a really busy week at work, programming a new system, working overtime, then had some twat come in and complain about a printer not working, telling me my response wasn't good enough. Never get into an argument with a diabetic who knows he's right... it's like you flick a switch, rage mode, and all the while you are just a passenger, you know your being severe, you know the person might not exactly deserve to be so vocally 'flayed', but by then it's a downward slope. Flick the switch back again, and I'm as relaxed as can be, until the next douchebag comes along.
It's not like a blind rant either, its a concise and tenacious verbal assault. I tend not to need to fight physically these days, not necessary when you sound like you might just enjoy eating the poor sods liver. I only ever feel bad when I do that with someone in my family, everyone else tends to deserve it.