Obesity seems to be a real problem these days, especially among young people. 
Do you agree that obesity is mostly preventable through social changes and personal choices?
I think that society has lost the ability to prepare healthy meals at home and we rely too heavily on fast food and junk food. It can be addicting. 
That definitely leads to the United States having the highest obesity rates in the world.
Yes. I think we need to go back to teaching basic cooking skills in school, like they do in Britain. 
Yes, but in France, childhood obesity is growing faster than obesity in adults
Oh dear, I didn't know that. So it's not just an American problem. I think lack of exercise plays a huge role too. 
Yes, lack of exercise and food manufacturer's marketing towards children.  Laws around it have really evolved in recent years.
Hopefully that will help. Obesity is a tremendous drain our our healthcare systems. 
It's a huge drain on our healthcare systems, but how can you blame children since food advertisements aren't even just on tv anymore.  They have moved into the classroom.