Well, strangely, in the good ‘ole USA they are both epidemics and ironically enough one is too much (calories) in, not enough out whereas the other is too much (money) out, not enough in-maybe that would be an inverse relationship….
So I asked the mighty google: “is there a correlation between being overweight and being in debt?”
here is one search result:
“The study found that indebtedness was associated with an increased likelihood of overweight and obesity, even when examined independently of other factors. This means that people who are over-indebted are more likely to be overweight or obese regardless of factors such as income, education, sex, or age – suggesting that over-indebtedness alone can cause obesity.”
another states:
“Overindebtedness affects a series of risk factors for chronic diseases such as leisure time activities, as well as participation in social activities,” the authors concluded, adding that diet could also play a role.
“Energy-dense food such as sweets or fatty snacks are often less expensive compared to food with lower energy density, such as fruit or vegetables,” they added.”
I don’t know which comes first, debt or fat…
I suppose the new manosphere warcry should be “Keep your waist slim and your wallet fat.” However that would distract them from crying about how they aren’t alpha and how HBD is really science™ and not racism in disguise.
stonerwithaboner 
“suggesting that over-indebtedness alone can cause obesity”
A more plausible interpretation is that people with poor self-discipline and/or impulse control are more likely to both spend too much and eat too much.