Countries where people eat bread, pasta and rice on a daily basis have lower obesity rates than the US, so I think it's more likely a problem with lack of food

Countries where people eat bread, pasta and rice on a daily basis have lower obesity rates than the US, so I think it's more likely a problem with lack of food culture. After 15 years I'm still surprised by British adults talking about eating their "5 a day" like an Italian 6 year old would. My experience with American tourists, tells me that the situation there is even worse.