True Body Keto Ketosis is simply the presence of ketones in your blood. Some studies have shown that there may be a link between very low carb diets andcancerprevention. However, this is still being studied, and there is not yet enough evidence to show how accurate the claim may be. True Body Keto Reviews These reserves can only last about one day; and once depleted, the body must switch to a different fuel source called ketones. We at the Charlie Foundation believe that a 3-month commitment to the diet is a minimum commitment to allow your body to fully acclimate to the new fat based fuel source.