Why would it still surprise anyone that being poor frequently leads to emotional and health issues of all kinds?! Good food is more expensive. Sugar is cheap (and causes huge problems when overused). Good veggies, fruit, meat, fish, olive oil and spices (just some random examples) are simply inaccessible to billions of people.
Emotional traumas mentioned by other commenters here may or may not be more prevalent in poorer social circles, but multi-faceted support systems definitely are less prevalent (money=resources of all kinds, especially health services and broader social support through extended connections). What would be really interesting is research on specific methods to fight emotional behaviors resulting from such life experience (i.e. what specific things you can do to [learn how to] regulate your food intake)... Because if there are millions of people with that problem, then actual source of that problem is unimportant at the moment.. unless nobody knows of a way to change thigns for the better and the only hope seems to be in uncovering the actual reasons.
Emotional traumas mentioned by other commenters here may or may not be more prevalent in poorer social circles, but multi-faceted support systems definitely are less prevalent (money=resources of all kinds, especially health services and broader social support through extended connections). What would be really interesting is research on specific methods to fight emotional behaviors resulting from such life experience (i.e. what specific things you can do to [learn how to] regulate your food intake)... Because if there are millions of people with that problem, then actual source of that problem is unimportant at the moment.. unless nobody knows of a way to change thigns for the better and the only hope seems to be in uncovering the actual reasons.