Harvard researchers and biotech firms are testing treatments that could one day let people live far longer and healthier lives. In mid-2026, life biosciences, con-founded by Harvard’s Dvid Sinclair, began the first human trial of a partial cellular reprogramming therapy called ER-100.
Doctors inject genes based on Yamanaka factors into the eyes of patients with glaucoma and other nerve damage. The goal is to reset the biological age of cells without turning them fully into stem cells.
Early safety data is expected by late 2026 or early 2027. Sinclair has said the first person to reach 150 years of age may already be alive and believes we could eventually double human lifespan.
Harvard expert sees escape velocity by 2035
George Church, another leading Harvard geneticist, says humanity may already be near “longevity escape velocity.” This is the point where science adds more than one year of healthy life for every year that passes. He believes gene therapies now in development could push us past that mark by 2035 if human trials succeed.
Artificial intelligence is speeding up the work by designing safer delivery methods and better versions of the reprogramming proteins.
Mouse studies show dramatic gains
In animal labs the results look even stronger. One company reported that a combination of senolytic immunotherapy and personalized stem cells doubled the lifespan of aging mice while keeping them healthier.
Other teams have extended mouse life by 30 percent or more using drug cocktails that include rapamycin and new compounds. Aubrey de Grey’s group showed that stacking several different anti-aging treatments works better than any single one.
New drugs and everyday medicines join the fight
An AI-designed drug called rentosertib lowered biological age markers by three to six years in a small human trial. Popular weight-loss medicines such as semaglutide also appear to slow aging clocks and extend life in mice. Researchers caution that true immortality remains far away.
Accidents, new diseases and hard biological limits such as DNA mutations in non-dividing cells still stand in the way. Yet the pace of progress in 2025 and 2026 has convinced many experts that radical life extension is no longer pure science fiction.
