Yes, am aware of that so I opted for a 12 month balloon. I have three and a half stone to loose in total and previous to this have never been overweight. I am very happy with my balloon. It is very much a tool for me. I can eat as much as I wish . And whatever I wish. The balloon just makes it easier to say no. I spent two years researching it prior to getting it done and chose to go to the UK and pay twice the price rather than have it done in Ireland because of the package and support program. Good luck whatever you decide. It works well for some, not so well for others.