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'Diet guru' pulled from Carnival cruise over tweets from parody account

A neurosurgeon turned "diet guru" was removed from Carnival Magic on Sunday after a Twitter account bearing his name referenced a bio-terrorist attack. 

 Jack Kruse was scheduled to give a lecture on Jimmy Moore's 5th Annual Low-Carb Cruise, a themed voyage scheduled to embark from Galveston, Texas, on May 6. But before the ship left port for the Western Caribbean, the cruise line was "notified of a Twitter message under the handle of Kruse alleging he intended to cause harm to one of our ships," Carnival said in a statement. 

"The Galveston police, the FBI, the Department of Homeland Security and the U.S. Coast Guard were informed immediately and, shortly thereafter, authorities boarded the vessel to investigate the matter," the statement said. "Kruse was questioned, and since the investigation was ongoing, he was asked to disembark the vessel just prior to sailing." 

The source of the tweet — a parody account that mocks Kruse and his controversial teachings — wrote that “security confiscated dynamite. talk won't be as explosive as one at PaleoFx. still have vial of Legionnaires for epic biohack. #lccruise12.” The account has since been deactivated.

Kruse, who says on his website that he once weighed 350 pounds, is a low-carb advocate who touts "Leptin reset" (leptin is a protein hormone that plays a role in appetite and metabolism) and "cold thermogenesis," a method that uses ice baths, as part of his diet plan. 

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Kruse told the Tennesseean that he believes his critics are behind the anonymous Twitter account. "It was just a nightmare what happened," he told the paper.

There is some confusion over the disembarkation. Kruse told Nashville's News Channel 5 that he was cleared by the FBI and Homeland Security and yet was still denied boarding by Magic's captain, Giovanni Cutugna. 

Carnival, however, states the investigation "was ongoing at the point the ship needed to depart," and thus in the "best interest of all guests and crew to err on the side of caution and not allow him to sail." 

 "Subsequently, the FBI was able to confirm that Dr. Kruse was not responsible for the threatening Twitter message," said the line. 

On Monday, Carnival offered Kruse the option of flying to the ship's next port of call at the line's expense to rejoin the voyage. Kruse, who was scheduled to speak on Monday, declined the offer, which would have delivered him to the ship in Montego Bay, Jamaica, on Wednesday. 

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