To address the issue of DAG oil. My understanding is that all triglycerides ( animal or vegitable fats) and Diglycerides
( Diacylglycerides{Dag oil} and some components of olive oil) are broken up into glycerin and fatty acids during metabolism. These components that are not used as energy are reassymbled in the epithelial cells of the small intestine as fats . From there the fats can be stored as human fat in the omentium and on the hips ( major adipose storage sites) .
Dag oil has a missing fatty acid and therefore disrupts this fat reassembly and is available for energy usage only through metabolism in the liver. I believe that DAG oil would be effective when used with a low caloric diet regiem to reduce adipose fat storage. In the Japanese studies the target subjects were obese.
I have used 1 bottle DAG oils to repace oil used in salad dressings and baking.
I have not use it enough to comment on effectiveness.