"Darren Jones wants to check himself into rehab for an unusual “addiction.” He says he’s so hooked on Diet Coke that he downs 18 cans a day and can’t leave home without it. Judging by his photos in The Daily Mail, all that diet soda hasn’t helped him control his weight, which was edging toward 500 pounds when the pictures were taken.

He’s not alone. Former president Bill Clinton, Victoria Beckham, Elton John and movie moguls Harvey Weinstein and Jeffrey Katzenberg have all admitted to a Diet Coke habit, according to the New York Times. "