Think Type 2 diabetes’ high blood sugar levels are caused by drinking sodas and eating too many refined carbs? It’s not that simple. “In reality, a big problem is fat,” says Neal Barnard, MD, an adjunct associate professor at George Washington University School of Medicine and author of Dr. Neal Barnard’s Program for Reversing Diabetes (Rodale, 2007). Barnard is one of a growing number of experts who emphasize purging excess fat (both unhealthy fats from our diet and stored fats from our tissue) as a means of regulating blood sugar without the use of drugs.