It’s a challenge for people with severe mental illnesses to hold down a job or get the medical help they need. And that extends to when they try to alleviate hunger by getting on the federal Supplemental Nutrition Assistance Program, or SNAP.

Recent news stories have noted that those enrolled in the Supplemental Nutrition Assistance Program, also known as food stamps, have a higher rate of obesity than the general population.  Does that mean the program causes obesity?