That is a good point.

If a person has been on both a high carb along with fat diet in the past, some of what was in the diet can become part of what is in the fat cells. For example the quality of the fats in the diet. When these are burned off, they will get metabolized. Any toxins in the fat cells are going to get processed in some manner. It can take a long time to work through years of accumulation.

John