a study published in 2011 in "The Journal of Nutrition," both whey and soy protein were tested for their efficacy in altering body composition in obese but otherwise healthy adults. The study found that waist circumference was smaller in individuals who consumed whey protein. The authors concluded that, although the mechanisms are unknown, different sources of dietary protein have different effects on weight loss and body composition. They also noted: "Dietary recommendations, especially those that emphasize the role of dietary protein in facilitating weight change, should also address the demonstrated clinical potential of supplemental [whey protein]