Pop superstar Lady Gaga was hospitalized six times last year due to her extreme dieting, according to explosive new allegations made by her former tour manager.

David Ciemny says the star, real name Stefani Germanotta, would binge on junk food and then refuse to eat for weeks at a time in order to fit into her elaborate and often revealing costumes. Ciemny says Gaga once lost 20lbs between wardrobe fittings.

The allegations are contained in the new book Poker Face: The Rise and Rise of Lady Gaga by Maureen Callahan. Ciemny is quoted as saying that he believes the Bad Romance singer is “sick.”

“When I say she was sick,” he says, “I mean physically and mentally.”

Gaga canceled four shows in the U.S. this past January, claiming to suffer from an irregular heartbeat caused by that common rock star ailment “exhaustion.” There were also reports she had suffered a “break down” in New Zealand last March.

The singer has previously acknowledged to CNN’s Larry King that she has tested “borderline positive” for Lupus, an autoimmune disease which has already claimed the life of her aunt.

Lady Gaga has not publicly responded to Ciemny’s claims.

(Photo by PR Photos)

Story provided by the Dish Information Corporation