There is no such a thing as aging.

People started using zinc oxide as "the philosopher's stone" which turned copper into "gold". (brass)

The zinc started replacing other metals in the body, chiefly cobalt and copper.

Everyone died.

Eventually people accepted it's completely normal to die.

Scientists made a (completely understandable) mistake when they studied essential metals and included zinc in place of cobalt.

We keep dying to this day.