The repositioning of protein as weight management's most useful macronutrient had been building through the nutritional literature for over a decade by 2011, but the advice to actively prioritize protein — to "binge" on it in the hyperbolic formulation — required some careful unpacking to distinguish what the evidence actually supported from what the fitness industry was selling.

What the evidence clearly supported: protein had the highest thermic effect of feeding of the three macronutrients (roughly 25-30% of calories from protein were burned in digestion, versus 6-8% for carbohydrates and 2-3% for fat). Protein was also more satiating per calorie than carbohydrates or fat, meaning that higher-protein meals produced greater fullness for fewer total calories. And protein preserved lean muscle mass during caloric restriction better than low-protein diets, which meant that weight lost on higher-protein diets included a higher proportion of fat and a lower proportion of muscle.

These were real advantages. Higher-protein diets consistently produced better weight loss outcomes in controlled trials than matched-calorie lower-protein diets.

Where the "binge on protein" framing overreached: protein had diminishing returns at very high intakes, with most of the benefit captured around 1.2-1.6 grams per kilogram of body weight daily. Consuming dramatically more than this provided no additional benefit and potentially placed extra load on kidneys in people with pre-existing kidney conditions.

The practical translation: prioritize protein at each meal (eggs, legumes, fish, lean meat, dairy), and the caloric math and satiety benefits would follow without dramatic dietary intervention.