Researchers have been studying the genetic factors that contribute to the long lifespan of naked mole rats, which can live for decades. By transferring certain genes from naked mole rats to mice, scientists have been able to increase the mice's lifespan and improve their health. The exact implications for human lifespan are unclear, but the studies suggest that genetic tweaks could potentially extend human lifespan, with one finding suggesting a possible increase of around 12 years.