Two slices of whole wheat bread increases blood sugar levels higher than a single candy bar. Overdoing the wheat can result in "deep visceral fat." Wheat can also trigger effects that aren't immediately noticeable. Small low-density lipoprotein (LDL) particles form after eating lots of carbohydrates — which are responsible for atherosclerotic plaque, which in turn can trigger heart disease and stroke. And in fact, it has been shown that a wheat-free diet can improve glucose tolerance in individuals with ischaemic heart disease.