Japanese, 112, recognized as world's oldest man alive

A 112-year-old Japanese recognized the world's oldest living man cited "laughter" Wednesday as the secret to his longevity.

Chitetsu Watanabe, who was born on March 5, 1907, pumped his fist as he was handed a certificate by a Guinness World Records official at the nursing home in Joetsu, Niigata Prefecture, where he resides. He is in good health, according to the facility.

"I look up to my father, no matter his age," said Watanabe's daughter Teruko Takahashi, 78.

Born to a family of farmers in Joetsu, Watanabe moved to Taiwan at the age of 20 and spent 18 years there. He returned to Japan after World War II and worked as a civil servant in his hometown until his retirement.

He has five children, 12 grandchildren, 16 great-grandchildren, and one great-great-grandchild, according to his family.