I don't have it myself, but my cousin who is the same age and so on has suffered from it for a couple years. He gets bad spells with it and asked me if I had any advice. I told him four things:
1. Stop smoking
2. Stop drinking like a fish
3. Stop shoving processed junk in your face and eat real food
4. Start exercising
He followed this advice a for a couple months and saw huge improvements. This is about all I can offer,which is odd, since it kind of runs in my family and you'd think I'd have done some serious research on it by now.