Hi there I am also a Ljumjev user - about a year now, I haven't gained weight with the insulin and you shouldn't do unless your ratios have changed, in theory it should help you lose weight as your control is tightened up and so less likely to use corrections for highs. What age are you ? Females with hormonal changes are more likely to hit a wall with weight, I am peri and keep the weight in control with diet, weight training and running as well as HRT - I believe Ljumjev has helped me manage it better too.