We humans exhibit a peak cancer incidence in old age, around the early 80s, after which cancer rates decline from that peak. If aging is the continual accumulation of damage, then why do we observe this pattern of cancer incidence with age rather than a continual increase over time? It does not occur in mice, after all. Researchers here provide evidence for the explanation to involve reduced rates of cell division in later life, which may be one of many evolutionary adaptations connected to the unusual longevity of our species when compared with other similarly sized mammals, and particularly other primates. If there is less cellular replication, then potentially cancerous mutations will occur less frequently and spread less rapidly. The divergence of human longevity from other primates
From https://jamesjohnson10.blogspot.com/2019/10/evidence-for-human-cell-division-rates.html
from
https://jamesjohnson10.wordpress.com/2019/10/30/evidence-for-human-cell-division-rates-to-decrease-with-age/
No comments:
Post a Comment