After my initial scepticism, I have to say, it's something that I'd be interested in. I lost 2 stone last year and I've got 5 more to loose so maybe the balloon might kick start my weight loss again. If it's only for 4 months then I would give it a go, and if I had a noticeable weight loss, then I would be interested in it. It's going to be expensive I'd say, and it will not be covered by insurance or private health.