- Ketosis is a condition where levels of ketones in the blood are at an elevated state which causes the body to become a fat burning organism and Ketosis occurs because glycogen levels in the liver (usual energy source for the body) have been depleted. Putting the body in a state of Ketosis is desirable from a weight loss stand point because the body is in fat burning mode when ketone levels are elevated. When your body is in a state of Ketosis it pecieves it is starving which is why it turns to fat for energy. This is accomplishe... br br Read rest of WHAT IS KETOSIS - br this video can be found at: br br br what is ketosis, ketosis, ketones, low carb diet, whatispedia, whatispedia.