Keto Complex NZ Our fat stores are broken down into fatty acids and then ketone bodies – small acetone-like molecules – which serve as our other natural fuel source.So separate systems for saving and withdrawing energy.The problem is that, since the , our dietary habits have changed. We both eat a lot more and graze all day long.With diabetes, it is the carbs – the sugar and refined starches – that are the issue, because they stress our insulin regulation of glucose.