Why is 70 a Turning Point?
The authoritative journal "Nature" published an in-depth study that involved an 81-year follow-up of 10 newborns, comprehensively analyzing the changes in their bone marrow blood cells. The research revealed significant changes in the structure and differentiation patterns of hematopoietic stem cell populations after the age of 70. In adults under 65, blood cells come from 20,000 to 200,000 stem cells, while in individuals aged 70 or older, blood cells differentiate from only 10 to 20 stem cells. Researchers explained that throughout life, individuals gradually accumulate mutations, and the changes in blood cell numbers after the age of 70 reveal why the body suddenly becomes fragile and people experience noticeable aging, accompanied by an increase in age-related diseases.
