Transplanted hearts adjust their biological age to that of their host
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A study by Harvard University researcher Jesse Poganik and colleagues on mice and humans reveals that transplanted hearts change their biological age to match their host. Young donor hearts age rapidly in older recipients, while older hearts rejuvenate in young people, suggesting organs could be sourced from older donors. In 2024, the US recorded 4,636 heart transplants, an 81.5% increase since 2013.
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