The Hunger That Won't Quit You eat a big bowl of pasta and feel satisfied for forty minutes. Then the cravings return. You graze through the afternoon. By 9pm you're standing at the fridge again, slightly defeated, wondering why you have no willpower. You have plenty of willpower. You're just protein deficient — and your body has a mechanism specifically designed to keep you eating until it gets what it needs. This scenario plays out in millions of households every day. The conventional explanation focuses on portion control, calorie counting, or lack of discipline. But there's a deeper biol…