I've been reading more and more information leading to a connection between arthritis and immune compromise. Maybe obese people have poor nutrition but this is not limited to obese.
The root of most of our health problems, everything from obesity itself and all related issues to autism and ADD is the food we're getting.
The human body doesn't recognize the molecularly changed processed food many people eat, nor does it recognize the pesticides and substances designed to create neurological damage in insects. So brain reads 'undernourished' and the cells are not edified and can't do their job.