A recent review paper published in the International Journal of Obesity lists a bunch of research studies promoting higher protein diets as an effective management strategy for reducing body fat. More and more research is emerging indicating that eating like a cave man is the way to stay lean, strong and healthy.
But why? Why does eating protein promote superior fat loss?
Certain properties of protein - the way it is metabolized - contribute to greater energy expenditure. First and foremost, protein has a higher thermic effect than carbs or fat so, protein requires a bunch more energy to metabolize than the other two.
Here's the breakdown of energy expenditure:
0 - 3% for metabolism of fat
5 - 10% for carbohydrate
20 - 30% for protein
So the experts are wrong once again - a calorie is NOT just a calorie anymore than a piece of wood is a piece of wood. As an amateur carpenter I can tell you with utmost certainty that woods burn differently from one another, cut differently, shrink and absorb water differently, etc.
Popeye said "Eat your spinach!"