What Are Some Limitations of the Studies?
Long-term studies are needed to determine conclusive results regarding weight loss, lipid profiles, insulin sensitivity, and most importantly, safety. Existing studies vary in terms of caloric restrictions; relative amounts of carbohydrate, protein, and fat; and other outcomes, making it difficult to compare results. Studies often include only severely obese patients, not those people who only need to lose a few pounds. Therefore, the results may not apply to all people.
