Dinosaurs That Shaped Us: The Longevity Bottleneck Behind Mammal Aging

A Birmingham microbiologist proposes the longevity bottleneck hypothesis: during the age of dinosaurs, mammals were pressured to reproduce quickly, leading to loss or inactivation of genes tied to long life. This evolutionary pressure could explain why humans and other mammals don’t exhibit extreme longevity or regenerative traits, though the idea remains a hypothesis that needs further testing.