I remember coming across a study that has a fairly different conclusion. Of course, not having any caloric intake is a sure-fire way to lose weight, poverty limits people to cheap and calorie-rich (but not nutritionally rich) foods.
Dr Martin Weber, Team Lead for Quality of Care and Programme Manager of Child and Adolescent Health at WHO/Europe, said, “The affordability and accessibility of healthy food options are often limited for families with lower incomes, leading to a higher reliance on processed and sugary foods, which can have detrimental effects on adolescent health.”
In my part of the world, poverty food has for the past few decades been instant noodles, on rice. Carbs on carbs. In my worst days, I managed to get by with just crushed junk food (think, the cheapest doritos-like chips I can afford) on rice (one serving for 0.10 USD).