Just like in the modern world, people in ancient times wanted to know how to live a long and healthy life.

Greeks and Romans heard fantastic tales of far-away peoples living to well beyond 100.

Greek essayist Lucian (about 120–180 CE) writes:

Indeed, there are even whole nations that are very long-lived, like the Seres [Chinese], who are said to live 300 years: some attribute their old age to the climate, others to the soil and still others to their diet, for they say that this entire nation drinks nothing but water. The people of Athos are also said to live 130 years, and it is reported that the Chaldeans live more than 100, using barley bread to preserve the sharpness of their eyesight.

Indeed, there are even whole nations that are very long-lived, like the Seres [Chinese], who are said to live 300 years: some attribute their old age to the climate, others to the soil and still others to their diet, for they say that this entire nation drinks nothing but water. The people of Athos are also said to live 130 years, and it is reported that the Chaldeans live more than 100, using barley bread to preserve the sharpness of their eyesight.

Whatever the truth of these tales, many ancient Greeks and Romans wanted a long and healthy life.

This is how they thought this could happen.

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