What You Actually Keep

Because digestion charges different rates, the calories you absorb aren't always the calories you eat.

Eat 100 calories of chicken breast and the digestion tax leaves you closer to 75 usable calories. Eat 100 calories of butter and you keep nearly all of it — around 97.

That gap is why higher-protein eating quietly supports weight management, no willpower required. The cost is baked into the food itself. It isn't a trick — it's basic physics playing out in your gut.