Immortality through transplants is unlikely, but slowing aging could improve health. Putin, in particular, speculated that repeated organ transplants could keep a person youthful indefinitely. The idea that ongoing organ transplants could provide immortality is almost certainly incorrect. Putin may instead have been imagining lab-grown organs developed from stem cells, which would avoid this ethical problem. If we value preventing diseases such as heart disease, cancer, and dementia, we should welcome research into slowing aging (which could in turn help to reduce these problems).