Here’s what happens when you stop eating sugar, according to nutritionists How sugar cane fuelled a consumer revolution but is now responsible for serious ailments. So, you’ve heard that sugar is the devil and that merely glancing its way will cause all the bad things to happen to you. Okay, maybe that’s a bit dramatic, but still, eating too much sugar is associated with all sorts of health problems. First off, it’s important to note that all of this specifically applies to added sugar (cane sugar, honey, maple syrup, coconut sugar), not natural sugar found in dairy and fruit. The most recent Dietary Guidelines for Americans recommends consuming less than 10 percent of calories from added sugars, a guideline that Gorin recommends sticking to. (She notes that, for a 2,000-calorie diet, this equals about 13 teaspoons of added sugar.