That's probably one of the many diets I haven't looked at or tried. I lost the big chunk doing calorie counting, going as low carb as I could sometimes but not as fat heavy as liw carb can be.
It triggered obsessive behaviour. If I was at a party and ate some cake I'd go on the cross trainer until I burnt it off and I remember eating out and everyone ordered dessert and I went for a walk on my own to resist temptation. I relaxed all that after both pregnancies because I don't want to obsess anymore and I don't want to be miserable. I think slimming world promotes unhealthy relationships with food too so I won't do that.