I shared the same idea. But changed it after realizing some 'new' fundamentals - backed with scientific research.
One of the questions to ask is how is it possible for your body to display signs of starvation or malnutrition with overly obese extremities? Fat is stored calories, they say.
Second, your body does not live on calories but nutrients. It requires a lot of minerals and electorlytes for bodily processes to function.
Metabolism is one of them. When you thermally process - burn or fry all nutrients - you still need to process them through your body. And for that you need nutrients not calories.
For example, to properly absorb water into cells, you need electrolytes, not calories.
Also, many processed fats, for example, get metabolyzed but cannot be utilized properly. They stick to walls of your intestines and blood vessels,...
And your body needs to use other mechanisms and processes to get rid of them or store them in the least limiting waste stores.
Many unuseful stuff - like toxins, chemicals, damaged nutrients,... - still enter your 'inner' body through bloodstream. Some of these create inflammation.
To handle the inflammation, your body needs excessive amounts of minerals, elctrolytes, and enzymes that it does not receive (enough) from processed foods.
How to they enter the body, bloodstream? I don't know for sure, but 'leaky gut' would be my best guess. Burned nutrients, for example, are useless but can still enter our blood stream.
I hope that makes some sense. An excellent question, thank you!