Those who follow the low-carb diet plan believe that a decrease in carbohydrates results in lower insulin levels, which in turns causes the body to burn your fat for energy.  While it’s undeniable that people lose weight on low-carb diets, this weight loss probably isn’t attributed to the drop of insulin levels.  It’s more than likely a result of people eating less calories and being conscious of what they eat.

Popular low-carb diet plans consist of the Atkins Diet, Zone Diet, and Protein Power.  As far as longetivity concerns, comparing these diets to others shows the same thing — year after year, people drop out at near identical rates.