I have gradually gained weight over the last 30 years till I was borderline obese 5 years ago at 80kg. . I watched my carbs and my bgs and three years ago got down to 70kg (slightly overweight). I went onto a pump nearly two years ago, my total insulin reduced and I didn't put on any more weight. Yes, I still have to watch what I eat (cheese, alcohol and desserts are kryptonite for me if I overdo them) but I can have most things in moderation.