Also, the most important element of a
diet are vegetables, which are carbs, so a truly low
carb diet would have few vegetables in it and would therefore be unhealthful for most of us. There's also a big different between whole grains and highly refined grains, which means that eating grains usually means white flour wheat to most people. That's not a calorie problem as much as a quick metabolizing to sugar problem, and unburnt sugar stores as fat.