Jimmy Carter Good Genes or Good Docs?! 1/28/2009 6:00 AM PST BY TMZ STAFF As far as U.S. Presidents go, Jimmy Carter will always be 39th.Here's the 54-year-old during his administration back in 1978 (left) -- and the 84-year-old version (right) at a NYC bookstore on Monday.Peanuts do the body good. See Also Linda Evangelista: Good Genes or Good Docs?! Susan Lucci: Good Genes or Good Docs?!