Research request?

aimforpeace

I'm looking for research that addresses WHY people overeat and remain sedentary. I'm not so much interested in research that debates exactly what constitutes a healthy/balanced/nutritious diet, or what makes the ideal fitness routine, but rather why people continue to overeat and remain sedentary, even though we know overeating and a sedentary lifestyle has dire consequences. I'm not so much interested in hearing everyone's opinions, I'd rather be directed to articles/books/websites that investigate this. Anyone have any recommendations?