Andres Moreno, 38 of Mexico was probably the most obese person of the world as at one time tipped the scales at 450 kilos. In hope of shedding the excess weight and leading a normal life, he underwent bariatric surgery on October 28 in Guadalajara, Jalisco state. But the surgery was of no use as he passed away on Friday in Mexico, barely two months after undergoing the weight-loss surgery. It is learnt that he died of a heart attack and peritonitis in Ciudad Obregon, in Sonora state.