Leonard Hayflick

Leonard Hayflick is an American biologist best known for discovering the "Hayflick Limit," which refers to the number of times a normal, somatic human cell can divide before cell division stops, typically around 40 to 60 times. This phenomenon is significant because it has implications for aging and cancer research, helping scientists understand the biological limits of cell replication. His work has contributed to better insights into cellular aging, the life cycle of cells, and the potential for regenerative medicine. Overall, Hayflick's research has shaped the way we think about human longevity and cellular health.