In a presentation titled "A Calorie Deficit Cannot Ever Exist – Here's Why!", it is argued that the energy balance equation—calories consumed minus calories expended—does not reflect the complexity of human metabolism. The video emphasizes that a calorie deficit cannot be considered if the body cannot access its body fat reserves.
Using analogies with money management, it explains that just as you can't spend what you can't withdraw from a storage location, the body can't access stored fat if hormonal signals don't allow it. The hormone insulin plays a central role in this process.
When insulin levels are high, the body receives the signal to store energy and blocks the release of fat. Conversely, if insulin is kept low—through low-carb diets or intermittent fasting—the body accesses stored fat and uses it as an energy source, balancing the energy equation.
The video emphasizes that two people can consume the same amount of calories but achieve radically different results depending on the quality of the food and its impact on insulin. Thus, foods like cookies and sweets quickly raise insulin levels and promote fat storage, while lean proteins and vegetables allow for efficient fat burning.
The bottom line is that sustainable weight loss depends not only on calorie counting, but also on hormonal control. Understanding how insulin regulates access to body fat is essential for effective weight loss strategies.
Sources cited:
1) Video on YouTube: “A Calorie Deficit cannot EVER exist – here’s why!” https://www.youtube.com/watch?v=6rqIG5cDCXw