"Fat People Not More Jolly, Study Says."
Some copy editor was having fun with that headline. In any case, the study says about what you'd expect: obese folks don't find life funnier, or more enjoyable. Flab does not act as some sort of serotonin storage compartment. Instead, fatter folks are more depressed and anxious, but less likely to abuse drugs or alcohol. The results hold for both men and women. The study isn't able to identify a discrete cause -- there are many options, most exactly what you'd expect -- but it's a worrying outcome, particularly as the nation develops an ever-larger waistline.
