Is the โCalories In, Calories Outโ Model Broken?
The old-school model says - - Eat 2,000 calories therefore your body โgetsโ 2,000 calories. - Burn 2,000 calories = balance. But in reality, the MICROBIOME (gut bacteria) acts like a middleman that decides how much of those calories your body actually absorbs. Firmicutes vs. Bacteroides Example Person A (more Firmicutes) - - Eats 2,000 calories. - Firmicutes extract extra energy from carbs and fiber. - Maybe they actually absorb 2,200+ calories worth. - Excess energy stored as fat. Person B (more Bacteroides) - - Eats 2,000 calories. - Less efficient at extracting calories so maybe they absorb 1,800โ1,900 calories. - More food passes through unabsorbed resulting in less fat gain. So two people, same meal, same exerciseโฆ totally different fat gain outcomes. Why This Matters in Weight Loss - It explains why some people feel like they โgain weight just looking at food.โ - It also explains why calorie-restriction diets sometimes fail as the microbiome is still extracting extra calories. - Addressing the gut balance (Firmicutes down, Bacteroides up) makes the โcalories inโ part of the equation more favorable. FitnHealthy Forever Tip - The same 2,000 calories on a nutrition label is not the same 2,000 calories once the microbiome processes it. What questions did this create in your Mind? โ