Hats off to Miyazaki and all the other old folks out there

At an athletics tournament last week 105-year-old Hidekichi Miyazaki broke into the record books with a 42.22-second dash in the 100m and raced into the Guinness World Records as the fastest man in the world in the over-105 age category.

Japan, which marked "Respect for the Aged Day" on Sept 21, has the highest number of people over 65 years old. The number of people over 80 has crossed 10 million with 60,000 of them being more than 100 years old, according to Japan's Ministry of Internal Affairs.

Japan should be proud of its people who live longer than their peers in the rest of the world. But their longevity also comes with problems.