Why do different organisms have different lifespans? PART-2 (the SCIENCE)

Okay, so why do different organisms REALLY have different lifespans? (For folk lore, visit the previous post). What do you think?

Featured image“…an organism’s lifespan is, for the most part, predictable in early adulthood… mitochondrial bursts are a stable predictor for a variety of genetic, environmental and developmental histories… have an amazing power to predict the remaining lifespan in animals…” From: http://www.nature.com/news/lifespans-predictable-at-early-age-1.14712

HOWEVER…

“A comparison of standardized demographic patterns across 46 species… suggests that the vast diversity of ‘ageing strategies’ among them challenges the notion that evolution inevitably leads to senescence, or deterioration of mortality and fertility, with age.” From: http://www.nature.com/news/not-all-species-deteriorate-with-age-1.14322

Next we will get into these mechanisms – step by step… and you will be all set with your mitochondria, telomere, DNA damage, senescence and lysosomal terminology!

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