Here’s a simple rule of thumb:
Multiply the grams of protein by 10.
If that number is greater than the calories, it’s a clean, efficient protein source.
✅ Example:
- Chicken breast: 25g protein × 10 = 250
- Calories: ~130→ Great source!
🚫 Example:
- Peanut butter: 8g protein × 10 = 80
- Calories: ~190→ Not a lean source (mostly fat)
📊 Quick Scale:
🥇 Top Tier (Lean, High-Efficiency)
- Chicken breast
- Egg whites
- Whey isolate
- White fish
- Turkey breast
- Nonfat Greek yogurt
🥈 Middle Tier (Moderate Protein, Some Extras)
- Whole eggs
- Low-fat cheese
- Tofu
- Cottage cheese
- Beans/lentils
- Quinoa
🥉 Bottom Tier (Protein by label, but not by ratio)
- Peanut butter
- Nuts & seeds
- Protein bars (depends on the brand)
- Whole grain bread
💡 Use this rule when grocery shopping, meal planning, or comparing snacks. High-protein doesn’t always mean lean protein.