By the way, I don't think fast food is solely to blame for obesity, sure, it doesn't help, but I used to be a bit of a fast food junkie and I stayed a size 10 for many years. I'm a 12 now though! I think what is important is to balance out your intake of rubbish calories and your sedentary lifestyle with regular exercise, a cliche I know, but it's a winning formula.
I dont think its fast food per se, but more the sheer volume of availability of it and the media that is to blame for the obesity trend.
Every single high street has multiple chip, kebab, chicken, chip, chinese, pizza, sandwich and so on outlets on it now, its a dream to find a place that has none of them, i feel that 90% of these shops are unnesessary and just cashing in on people with a food problem.
The media are to blame for gloryfying the junk to children and parents who may not have the time to prepare decent meals all the time. I have seen many instances too where children grap a bag of chips on the way home from school and then get a proper meal too - instant weight trouble ahead.
Personally i think we should go back to WW2 food rationing for a couple of years, see how fast the weight comes off then!! Also grow your own is coming back, cant be bad.
Its the same for the alcohol trend. Once a many moons ago, the only places you could get alcohol was a pub with off-sales or an off-license. Now you can get it in every shop on the street practically. My point of view is that if you shove something in peoples faces enough, they WILL buy it eventually, its not good.