I posted in the other thread, but will post again here.
Exercise alone won't help.
I have been put on a low GI diet because I was sick for almost 2 months when I had the balloon inserted. When I started eating normally again, I put on 7kg.
You HAVE to change your eating habits. I'm losing weight really well now, and I have PCOS and insulin resistance which makes it even harder - but it's finally working. The balloon merely fills a gap so you don't feel hungry all the time. It doesn't make the weight fall off. It's all a lot of hard work - there is no easy way out at all.
Good luck to you!
Re. fruit juice etc - eat fruit, don't drink fruit. Fruit juice is wayyyyyyyyy bad because it's so concentrated.
I eat:
High fibre cereal for breakfast
Apple for a snack
Lunch: low GI seed bread with chicken or tuna on, and spread thin layer of light mayo because I've totally cut out all margarine and butter; sometimes have a gherkin with that
Dinner: brown rice, veggies and a meat normally
I even stopped smoking and am doing just fine. It's been about 3 months now. I've cut out all coffee, soda, chocolate, crisps etc. No cakes. No junk food whatsoever. If I am hungry I buy some grilled chicken or fish etc. You have to make a lot of changes and compromises. I can't eat half of what my family and friends eat. Going to a restaurant now is very difficult, but go to one that might provide healthier meals. Or when I'm out during the day and have no food with me, I can't stop at McDonalds etc - so I buy a low GI breadroll and some cold meat (but still careful because of the ouhigh salt content) and it works really well!
Keep every meal below 10g of fat per 100g. I now check all food labels. I find this helps a LOT. I couldn't believe that a tomato and mozarella sandwich contained almost 22g of fat, and I ate one a few weeks ago when I stopped being sick. It had basil pesto on too. So anyways I'm just more aware of things when I go shopping. After the balloon I could not even handle going into a shop at all. I freaked out. I looked at what I used to eat, and never thought badly of it... and how the balloon had changed all of that. It was like an old life staring at you, but it's a lot easier now.
Low GI fills you up, and keeps you going. You should look into it.