State Senator Douglas Henry is hospitalized in Nashville.
An aide at Henry's office told News 2 Henry is hospitalized for a virus and dehydration.
He went into the hospital Monday and is expected to be released on Thursday.
At age 87, Sen. Henry is one of Tennessee's longest serving lawmakers having served in the State Senate since 1971.
Henry said last year he will not seek re-election in 2014 in order to spend more time taking care of his wife.