The problem with these types of posts is that while there's a grain of truth in there (burn more calories than you take in), we're still not able to easily determine a number of key pieces of information that would allow us to really understand how to be successful: 1) How many calories do you need at your target weight? 2) What is your basal metabolic rate? 3) As you cut out calories and lose weight, how much is you…
We did at least work out why processed foods appeared to be more calories, turns out we spend about 20% more energy digesting food that isn't highly processed. Which also goes to show that calories in calories out is far over simplified when people are suggesting deficits that could easily be less than 20% of daily intake.
It is a chemical process and a very complex one at that and right now food science is basically garbage tier with very little in the way of good studies, most of the better end is on mice and rats.