From someone that had an eating disorder for 7 years slimming world in some ways did 'change my life' in some ways. I spent years and years starving myself and restricting my food, this only stopped once I fell pregnant and I needed to eat for my baby. After having my child I had gained about 6 stone no joke, my metabolism was totally fucked and I gained weight so easily just eating a normal every day diet with a few treats here and there.
I tried eating soups and liquid diets after but ultimately I said enough was enough and I cant starve this weight off so I joined slimming world. I lost about 2.5 stone on it in 3 months. It was the first time in my whole adult life I had ate 3 meals a day and snacked. I ate alot of food, and I cried the first week when I lost 2 lbs, I didnt think I could ever eat and lose weight so it was great.
However, I quit because whilst it's great that you can lose weight eating things like pasta for 'free' the whole syns thing was taking over a bit and I'd never eat my syns and just use them on wine on the weekend, not very healthy lol.
I decided to stop going to group, I joined a gym, and I now still eat my 3 meals a day. I no longer count food as free or syns, but one thing I will say is I have taken some of the basic sw principles and I use that in my own diet now, so for examply hexA/B I will have one serving of wholemeal bread, or grains, whatever a day but I do not limit this to a 60g roll, if i want proper wholemeal bread i will have it. Also with milk/cheese I will decide which one I want that day, and have one of them not both (diary doesnt agree with me but i bleeping LOVE CHEESE)
Ultimately sorry I am rambling but I think if you follow slimmingworld properly (not like harry pickard) and eat 1/3 of your plate veg for most meals and not overdoing it on the bread and cheese it'll probably work! But doing it the wrong way:
Eating pasta (¬ weighing it) for every meal will not make you loose weigh
Just because you have 10 syns left over doesnt mean you should binge on crisps and chocolate to use them up
Using your daily syns on sweets or junk is NOT HEALTHY, eat an advocado
Slimming world is good for people who need to be educated on diets, fat or thin, it really helped me change my entire outlook on losing weight!
Sorry for boring you all!