The burger with the most calories in the world can be found at the Heart Attack Grill in Las Vegas, which has made national headlines for killing its customers with its over-the-top, gluttonous fare.
According to Heart Attack Grill owner Jon Basso, though, death has been good for his restaurant's business. We went to eat there and tried the 19,900-calorie Octuple Bypass Burger.
Produced by Will Wei
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