Mississippi is the fattest state, CO is leanest

Mississippi has once again claimed the title of fattest state, while Colorado repeats as the leanest. Louisiana remains at number four, but its three-year obesity average climbed more than any other state, by 1.8%, with a one-year 2005 obesity percentage just barely below Mississippi’s.

The fattest states are concentrated in the South (excluding Florida), while the leanest states are clustered in the non-coastal West and New England. Source.