I did Slimming World in the days when you could choose RED days mostly meat or GREEN days which were mostly carby meals. I lost weight if I had more RED days than GREEN. But I found it hard to eat the amount of food they wanted you to have, the 'consultant' as they called them kept saying I wasn't losing weight because I wasn't eating enough. This was pre any diabetes diagnosis but I suspect I may always have been on the brink.I believe SW offer whatever type of diet you want which I think is ridiculous but there you go. They tend to be inline with the 'Calorie' camp rather than 'Carb camp. That means the Carb content could be too high. You can always just follow a low carb diet without the SW cost but the opportunity to meet others who are dieting may be an advantage.