Has anyone mentioned the Thai obsession with food? On a positive note that means its a fantastic place to live but on the negative side it means people are constantly eating and, well getting over weight. I am currently in Vietnam where there is a much larger population to consume a smaller amount of food, and it shows. Also Vietnam exports alot of its foods so there isn't much left for the locals!
I do remember 30 years ago Thais were also much slimmer having a mainly fish based diet, but the country progressed, more food was made available, everyone is generally better off and can spend more on food.
What to do? Sugar is definitely a problem; force manufacturers to use less sugar and replace it with artificial sweeteners? Educate mothers and grandmothers to stop spoiling boys (food and other things)? Tax sugar in drinks?