There are some interesting points here, but at Slimming World we are all equal, and because there is increased pressure to look 'good' we concentrate on the healthy eating aspect - weight loss being a by-product of this.
We concentrate on good fresh food that doesn't have to be weighed and measured - and lots of it - with the occasional treat, whether it be wine,beer,chocolate, chips, lovely white bread!
We include the recommended daily intake of calcium and fibre and I have never known anyone be hungry whilst food optimising.
Men , generally lose weight more quickly than women, mainly because once they have made the decision to do something about their eating habits, they tend to stick to it until they are happy with their weight, but in all cases of weight loss and keeping the weight off, it has been a life changing experience.
So, remember the first step is always the hardest, but once that's done, there will be no going back.