A recent clinical study of 90 overweight men and women tracked
body weight and composition over a 23-week period. During this
time, the subjects supplemented with beverages containing either
whey protein, soy protein or carbs alone while following their
normal diet. The beverages were consumed two times per day
(around breakfast and dinner), and contained 200 kcal per
serving. The whey and soy beverages contained 28g of protein per
serving. Subjects were not given instructions to make dietary
alterations during the study other than to consume the beverages
twice per day. The whey protein group showed the greatest loss
in body weight, body fat and waist circumference. Compared to
the carb-only group, the whey group lost 4 pounds of body weight
and 5 pounds of fat mass while the soy group lost 2 pounds of
body weight and 2.4 pounds of body fat. The differences became
apparent especially after the fourth month of supplementation.
This study indicates that whey may be an ideal source of protein
to enhance weight