https://www.zerohedge.com/news/2019-02-19/fda-asks-old-people-stop-infusing-childrens-blood-prevent-aging

The idea of infusing young blood to fight aging has attracted technology entrepreneurs like billionaire Peter Thiel and was lampooned in a 2017 episode of the HBO show “Silicon Valley.” Thiel’s reported interest was sparked by a company called Ambrosia, which has locations in five states across the U.S. and sells one liter of blood plasma from donors between the ages of 16 and 25 for $8,000, according to its website.

Gottlieb and Marks said none of the plasma treatments has gone through the rigorous testing required by the agency. Ambrosia says “experiments in mice called parabiosis provided the inspiration to deliver treatments with young plasma.” The FDA approval typically requires human trials before companies can make a specific health claim about a product.