A longevity researcher is facing backlash for claiming to 'reverse aging.' Scientists say there's no consensus on what it means.

David Sinclair is embroiled in a debate within the longevity community on "reverse aging." Courtesy of Factory PRHarvard researcher Dr. David Sinclair is facing backlash in the longevity community.Critics argue that he took claims about "reverse aging" too far, The Wall Street Journal reported.Longevity medicine is attracting billions in investment from the world's wealthiest execs.Harvard researcher Dr. David Sinclair has found himself at the center of controversy within the longevity comm