Some will remember the roast of a commercial for facial cream from a few decades ago, where the comedy skit pronounced the secret ingredient was tears of a Tibetan yak. The product was marketed almost like a youth dew 🤔. For Millenia humans have been searching for the mythical Fountain of Youth. The legend goes that it is a mystical spring that magically restores the youth of anyone who drinks or bathes in it. Such desires can be traced back to the writings of Alexander romance (3rd century AD), of Herodotus (5th century BC) and the stories of Prester John (early Crusades, 11th/12th centuries AD). More recently the legend was prominent in the early 16th century where the people of the Caribbean professed the restorative powers of the water in the mythical land of Bimini. Such stories motivated explorers and adventurers alike to go in search for the elusive Fountain of Youth or similar remedy. The myth gained prominence in the 16th century when Spanish explorer Juan Ponce de León, first Governor of Puerto Rico purportedly went in search of the Fountain of Youth when he traveled to Florida in 1513. The story goes that he was told by Native Americans that the Fountain of Youth was in Bimini.
So it seems this mythical substance is cross cultural having held our fascination from continent to continent across thousands of years and we are still searching.
So it comes as no surprise that we modern day humans remain fixated on youth. The attached article discusses the prospects of geriatric scientists actually discovering  a drug, Metformin, that may in fact prolong youth. Coincidentally those scientists recently met in Spain to explore the viability of that and other drugs that prolong youth. In an era where age brings the prospects of cognitive decline now more than ever such a substance is in need. But here is the question:- what is young these days?