By Megan Molteni May 3, 2021Reprints Adobe Six patients with dementia traveled to Mexico last year to be injected with a gene therapy not authorized for use in the U.S., according to the CEO of a Seattle-area startup that wants to accelerate testing of unproven anti-aging medicines and views U.S. drug safety regulations as a hindrance. At the heart of the project is a controversial biotech called BioViva, whose CEO had herself injected with an experimental gene therapy in Colombia and whose advisory board includes renowned Harvard geneticist George Church. It is part of a growing ecosystem of entrepreneurs and scientists, dreamers and schemers, who believe aging is not inevitable and aim to develop treatments to extend the human life span.