MindTech Pill The liver secretes very important digestive juices that helps accurately to digest food and to purify the blood. When the liver gets plugged up the blood comes and it has the oxygen close to it, it has the nutrients attached to it, but all the toxins have not been removed. Liver detoxifies and cleanses your body by constantly filtering the blood of poisons that enter into it through the digestive region, the respiratory system and the skin. Given below are some common reasons for not losing weight on the ketogenic diet. However, if you are following this diet and are not losing weight, chances are that you are not in ketosis.