Neither of the people on either side of that scale are what anyone would call "healthy". A 4 lb dog can be completely normal and healthy, so too a 200 lb masti

Neither of the people on either side of that scale are what anyone would call "healthy". A 4 lb dog can be completely normal and healthy, so too a 200 lb mastiff. A 2-lb person will not be healthy, nor any 1000+lb person. Those are nano-percentage outliers. Fyi, the wikipedia entry for Lucia Zarate cites larger numbers, as much as 14 lbs.