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Whether or not Jackson himself had an eating disorder, research has shown that men, too, can suffer from them -- albeit at a rate about 10 percent of that seen in women.
However, certain eating disorders are more common than others among men, research suggests. In a 2007 study, Harvard University researchers found that men account for 25 percent of Americans with anorexia or bulimia and 40 percent of those with binge-eating disorder.
Still, Jackson's acquaintances say that even despite the star's apparent preference for healthy food, he was not always so particular. On rare occasions, LaPerruque said, Jackson would send his assistants out for an order from Roscoe's House of Chicken and Waffles, or an order of hot wings -- another of his junk food favorites.
He believes the rumor that Jackson suffered from an eating disorder is based on "something that someone made up.
"Now, was his appetite the same as mine?" he asked. "Absolutely not."
ABC News' Imaeyen Ibanga contributed to this report.