A blood replacement startup says it's running in 5 U.S. cities

Ambrosia, a company that injects young people’s blood into older people, says it is now up and running in five American cities, the company tells Business Insider. Filling your aged veins with one liter of a younger person’s blood costs $8,000 — and two liters is a steal at $12,000.

The big picture: This whole blood-replacement thing is marketed as an anti-aging treatment. But, as Business Insider notes, there’s essentially no evidence it has any medical benefit, and it has raised plenty of red flags along the way. Ambrosia recently completed a clinical trial of its procedure, but hasn’t published the results yet.