The evils of carbohydrates period.
BBQ sauce gives my leg cramps at night. I try to avoid HFCS in the stuff i buy, but when you eat out, you have no choice. Try avoiding any sweets at night and see how that works, if you eat desert.
Look into Deep Vein Thrombosis (DVT)
Insulin Resistance. Watch the 6:29 min video and go from there.
It will open up a whole new area of the evils of carbs.