Ketones, B-hydroxybutyrate (BHB), acetoacetate (ACA), and acetone, are molecules made in the liver from the breakdown of fats. This typically only happens when you’re following a very strict high fat and low carbohydrate diet, or fasting. When insulin levels are low and glucagon and ephine levels are relatively normal, fat is released from fat cells and travels to the liver. Here, ketones are produced and used as an alternative to glucose as energy to fuel the body.  Nutritional ketosis is the process of your body breaking down fat as a source of fuel and creating ketones. Supplementing with exogenous ketones like KETO//OS introduces ketone bodies into your bloodstream without pushing your body into nutritional ketosis, allowing you to experience a range of health benefits.