The dream of a “Fountain of Youth” dates back to writings of Herodotus (Book III:23) who lived between 484–425 BC. The tale of such a fountain has been recounted across the world now for thousands of years. The Fountain of Youth is a legendary spring that supposedly restores the youth of anyone who drinks its waters. Juan Ponce de Leon, the explorer and first Governor of Puerto Rico, dreamed of this Fountain of Youth and searched for it on a 1513 exploration of what is now Florida.
In 450 BC Herodotus spoke of the longevity, physical prowess, beauty, and general youthfulness of a group he called the Macrobians. The Macrobians were a people that thrived during the first millennium B.C. Herodotus attributes no magical qualities to a fountain of youth and paints no portrait like the one of modern fantasy. He suggests, rather, that given their strength and longevity, the Macrobians likely reaped some unique nutrition from their waters. The Macrobians most likely lived in the vicinity of the Rift Valley of what is now Ethiopia.