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Ageing in living organisms

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Aging occurs in all living organisms, and several studies have been performed to identify the causes that lead to ageing, with several responses provided to confirm the hypotheses. According to evolutionary hypotheses, there is an association between replication and longevity, which influences age patterns of death, as in the case of iteroparous and semelparous animals (Baudisch, 2009). MFRTA and ETC have been used to achieve a greater understanding of the aging process. One argument given to explain the reason for aging is that diseases and damage of the cellular and mitochondrial oxidative are correlated to the amount of reactive oxygen species production which damages biomolecules such as fat, protein, and DNA in the body of an animal. Animals have different lifespans and those with long lifespans usually have lower mitochondrial ROS hence less damage that occurs in their bodies over the years. One suggested method that can contribute to extending the lifespan of animals is the restriction of diet which would, in turn, reduce the oxidative damage and lower the ROS.


Baudisch A., DN Koons, JE Metcalf, S Pavard. (2009). Is life-history buffering or lability

adaptive in stochastic environments? Oikos 118 (7), 972-980.

August 18, 2021




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