Sakari Momoi (L), a resident of Saitama prefecture, writes a message to communicate with Saitama Mayor Hayato Shimizu (R) in Tokyo, in this Kyodo file photo taken September 2013. [Photo/Agencies]

TOKYO - A Japanese man who was certified as the oldest living man by the Guinness Book of World Records last August turned 112 on Thursday.

Sakari Momoi, a resident of Saitama city near Tokyo, is still in good health. He now lives at a healthcare institution in Tokyo and celebrated birthday with his families there.

Momoi was born on Feb 5, 1903 in Fukushima Prefecture. He used to be an agricultural chemistry teacher and principal of prefectural government-run high schools in Fukushima and Saitama.

The world's oldest living woman recognized by Guinness is also Japanese. Misao Okawa, 116-year-old in Osaka, will turn 117 next month.