Because 'Calories In, Calories Out' is only half the story.
Yeah, me too. Keto, Paleo, Vegan, whatever... it's mostly noise. Simple works. Complex sells.
Every animal, including humans, needs a certain amount of protein to function. The Protein Leverage Hypothesis (PLH) states that your body is hardwired to keep eating until it hits that protein target, no matter how many extra carbs and fats get consumed along the way.
If your food has a low protein ratio (lots of carbs/fat diluting it), you'll eat a lot of calories just to hit your necessary protein target. This can lead to weight gain.
If your food has a high protein ratio, you hit your protein target with fewer total calories. Hunger subsides sooner. You naturally eat less energy.
It's about the ratio, driven by your body's absolute need for protein, not just "low carb" or "vegan". Those diets only work *if* they accidentally fix the protein ratio. Get enough protein *relative* to the other macronutrients, and your appetite works *for* you, not against you.
Three simple rules:
Make protein the main event. Aim for a high protein *ratio* in your meals. Eat your protein first. Your body needs it, so give it what it wants upfront.
Nail Rule #1, and your appetite should regulate better. You'll feel fuller on fewer calories. Listen to your hunger *after* the protein is handled.
Don't just sit there. Exercise tells your body to use that protein to build muscle and other important things, not just store energy. Lift weights. Walk briskly. Do something active.
Simple tips:
This calculator gives a rough target based on the Mifflin-St Jeor BMR formula for your height/age/sex at an ideal weight (BMI 22), a sedentary activity level (1.2x BMR), and aiming for 17% of those calories from protein. It's a starting point, not medical advice.
Because cheap, easy processed food is everywhere and it's often low in protein. The trick is getting that protein *without* excessive extra fat and carbs tagging along. This takes thought and consistency. There are no magic pills.
Understand Protein Leverage. Follow the rules: Protein First, Trust Hunger Cues, Move Your Body. Use the tools: Lean choices, Fewer legs, Label check. Stop looking for shortcuts and apply some common sense.