Lu Zhihao, 4, stands up from his mother's lap outside his house in Foshan, Guangdong province, China, March 29, 2011. Four-year-old Lu, who is 1.1m tall (3.6 feet) and weighs 62 kg (136 pounds), put on weight dramatically since his appetite grew when he was 3 months old. His worried parents took him to several hospitals, but the reason for his obesity remains unknown, though it is possibly due to his dietary habit, according to local media. REUTERS/Joe Tan
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