All research NOT funded by people with a dog in the fight finds this:
If you have truly normal blood sugar metabolism–fasting of 83 mg/dl and blood sugars that never go over 140 mg/dl for more than 10 minutes, you can eat whatever foods you want, and as long as you cut the calories, you will lose weight.
If your blood sugar is not normal–and 2/3s of the American population have some degree of early blood sugar dysfunction even if they are told they are “normal” then the level of carb intake starts to make a big difference in how easily you will lose weight.
It also matters if you are a “diet virgin” or not. I know people with diabetes who were able to lose a lot of weight on Low FAT diets by cutting calories, but this is usually because they had never dieted seriously before.
One you have a history of dieting, the body has learned some tricks that make it much tougher to lose weight no matter what diet, and if your blood sugar isn’t normal, you really do need to cut the carbs.
–from Bloodsugar 101 on Atkins Friends

