 This study will examine whether a higher protein meal replacement diet consisting of 1 gram of protein per pound lean body mass is more effective in causing weight loss compared to a standard meal replacement protein diet consisting of 12 gram of protein per pound of lean body mass. The study will assign approximately 100 subjects 50 each to the following arms 1 higher meal replacement diet program 2 standard meal replacement diet program. All participants will meet with a registered dietitian to provide nutrition education and behavior modification, including general exercise recommendations. As part of your participation, you must be willing to undergo a measurement of body fat, and blood tests, and be willing to use Herbalife Meal replacements as part of your diet for the duration of the study one year. 