If you need to lose weight, switching from a carb-based diet to a fat and protein-based diet will help rebalance your body's chemistry, and a natural side benefit of this is weight loss, and/or improved weight management once you're at an ideal weight.
This past August, I finally decided to seriously change my diet after reading several books on health/diet/low-carb/Paleo to follow the high fat/moderate protein/low-carb lifestyle to which I have lost 28 lbs. so far and I feel great! HTH, Sharon:)