Sources: Ministry of Internal Affairs and Communications; Cabinet Office. Chart 12  I. Achievements and Changes  Evidence of Slowdown in Physical Aging Average Number of Teeth  Average Walking Speed 1.45  meters/second  5 years younger! 25  number of teeth  1.42  10 years younger!
22  1.40  1.38  1.37  CY 2007 CY 2017  20  CY 2005 CY 2016  20 18  1.35  18  1.33 15  1.30 1.30  15 11  1.25  10 1.21  1.20 5 1.15 1.10  0 Age 65-69  70-74  75-79  Age 65-69  70-74  75-79  Notes: 1.