Elsa Pearson, MPH, is a senior policy analyst at Boston University School of Public Health. She's on Twitter @epearsonbusph.
The closest grocery store is a few miles away and your paycheck doesn't clear until Friday. You even skipped lunch. With no car, only a few dollars and kids at home, you decide dinner will have to, yet again, be the local fast-food restaurant within walking distance. It's cost-effective, but you're already bracing for the "healthy weight" conversation at the pediatrician's next month.