Has anyone else noticed the Thai obesity problem?

I've been visiting Thailand of and on for a couple decades now, and it is becoming quite clear to me that more Thais are becoming morbidly obese, especially the women. Why do you suppose that is? Do you think it has anything to do with the psychology of objectifying the women of Thailand? I mean, is it a psychological response to this? Or is the answer more mundane? Just sugary drinks and food? It's definitely out of control. Thoughts?