Answer: There are many problems that is related to age. The normal functioning of the body get disturbed as people reach certain age.
There are many defects that is seen in olfaction, vision, equilibrium, hearing, gustation et cetera.
Say, glucoma is a age related disorder in which rise in fluid pressure takes place in eyes, which leads to vision impairment in older age groups.
Hypogeusia is a problem that is associated with the reduced ability to taste things. This also occurs in the people with older age groups.