For now, researchers are still trying to get the U.S. Food and Drug Administration (FDA) onboard. As it stands now, the FDA only approves treatments for a specific medical condition—Prozac, for example, was first approved to treat depression, Lipitor to treat cardiovascular disease. Now researchers in the field of aging are trying to convince the agency to make a separate designation for preventative medicine. From the FDA's perspective, the field of medicine built around combating aging is still in its infancy. "A question not yet answered is how many aging-related but otherwise independent diseases (coronary artery disease, dementia, sarcopenia, etc.) would need to be improved for us to consider the therapeutic effect an 'anti-aging' effect, rather than an effect on specific diseases. It is worth noting again that a drug that improved ANY of these conditions would be very valuable," an FDA spokesperson said via email. It's also still a challenge to figure out how to measure whether or not these interventions are effective. "The FDA is looking forward seeing this area of science evolve," the spokesperson added.