Onion rings. They’re not good for you. According to About.com, a single serving of 8-9 onion rings contains 276 calories, 15.5 grams of fat, including 7 grams of saturated fat, 14 milligrams of cholesterol, and almost 20 percent of your daily sodium. Plus there’s more than 31 grams of carbs! I set out to see [...]