And you need to understand that it's easy to get around this separation. Read the article I linked--it explains the many layers of conflict of interest that can be involved.
And Alan Aragon is right! That's why I turn to the basic biochemistry/physiology of metabolism when looking at body fat loss. I don't look to support my opinions with research. I look to the basic research (biochemistry and physiology) to enlighten my understanding of how the body works.
When you realize that when in nutritional ketosis, the mitochondria within fat cells over-produce ATP, you see why the very-low-carb approach works. See here for details:
https://medium.com/illumination/the-key-to-keto-fcc2cfe2f7f9