Using a high-protein, reduced carbohydrate, meal replacement shake in combination with a combined aerobic and resistance training exercise program can significantly improve your weight loss results.

A recent study showed those receiving meal replacements achieved superior results compared to those that did not.  Those receiving meal replacements achieved twice the weight loss, more muscle mass increase, greater increases in VO2max and endurance during treadmill testing.  All of the subjects that received meal replacement experienced improvements.

Also, total cholesterol and LDL decreased only in those receiving the meal replacements. 

PMID: 18426586