So you are claiming that calories from carbohydrates can make you fat, but calories from fat (& protein) don't??? I can't understand how anyone can still believe that in 2021!Except that thousands lose weight by replacing calories from carb with calories from fats and proteins and even exceeding them. Go on any low carb keto group and you’ll see evidence of that. There are studies that show it too. It may not happen for everyone but it very definitely does happen a lot for people highly insulin resistant. I personally almost doubled my calories on diagnosis and lost 3 stone in months. I’m sorry but you are very mistaken here
"The law of conservation of energy states that the total energy of an isolated system is constant; energy can be transformed from one form to another, but can be neither created nor destroyed."
https://en.wikipedia.org/wiki/First_law_of_thermodynamics