Vaso Prime RX With little or reduced insulin levels in the body, there isn't much need to store extra energy in the form of fats because the body can instead reach into the already existing fat stores for energy. Eating low-carb foods lead the body to release less insulin. This is because a ketogenic diet is a low carb diet and thus it will help to reduce the overall body weight while at the same time carrying out the fundamental purpose of quenching hunger. Remember that keto is a dietary change. An increase in urination is another tell-tale sign of ketosis. The reason behind this tiredness is that your body craves carbohydrates for fuel.