What heavy people need to know about swine flu

We still have much to learn about the swine flu (H1N1) virus, and we will learn it as the outbreak plays out over time. Several early clues are of interest, and potentially of practical value. The latest news flash: an apparent association between flu severity and obesity.

We’ve also learned early that this flu seems to be most severe in young adults who mount the most vigorous immune response.  This may not have been entirely correct, since many of the deaths occurred in those with relatively serious prior medical conditions.

There is a theme here: This flu is apt to be less dangerous to those who are in better health in the first place.  Chronic illness, obesity, and even just dubious behaviors -- eating poorly, smoking, and so on -- are associated with inflammation. Inflammation, in turn, suggests your immune system is not well adjusted. 

More clues will mean more options.  But for now, the advice I would be inclined to dispense on general principles -- eat lots of fruits and vegetables, be active, don't smoke, get enough sleep, consider a fish oil supplement, control your portions and weight -- would appear to be appropriate for defense against the flu.

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