Researchers say one reason for the difference is complaints about insomnia by elderly people may simply be the normal process of aging and a shift in their internal clocks.
Study: Older people need less sleep
A study by researchers at Brigham and Women's Hospital in Boston found men and women between 60 and 72 years of age slept about one and a half hours less each day then a group between the ages of 18 and 32.
