The experiment was initiated in September 2015, when 44-year-old Elizabeth began to take two courses of gene therapy designed to stop aging. One course was designed to prevent the loss of muscle mass, and the second was aimed at increasing the level of telomerase products. Injections were made to it in Colombia, thus gene therapy drugs have not been approved by the FDA. The scientific community reacted to a similar experiment is ambiguous, and many criticized Parrish.

She decided to take this step in order to demonstrate the safety of this treatment. Previously, a technique has been tested in cell cultures and laboratory animals, but it is tested on patients was not. About the beginning of the experiment Parrish reported on the popular Internet site Reddit, inviting users to ask her questions.

However, according to the researchers presented the results of gene therapy really worked. The authors claim that they were able to stop the shortening of telomeres. It is known that as the aging of cells, the telomeres get shorter. patient telomere length was measured before the study began in March 2016. The researchers argue that gene therapy has made telomeres Elizabeth for 20 years "younger". The experiment continues - the researchers plan to continue to monitor the health of Elizabeth.