Age is a peculiar thing for mortal Beings if any kind. Both men and beasts suffer with age, as their body degrades and becomes closer and closer a withered corpse. Age is not considered an ailment or a detriment, but a constant piece of reminder that mortality is inevitable for many.
A character that is mortal and ages receives penalties to KON while gaining WIS in the same amount. Starting with 40 years of age, a mortal character receives a -1 to KON and +1 to WIS for each 10 more years they age, up to the point the character has no more KON to be penalized with.