The New Theory of Aging - A Degenerative Disease

For the entirety of human history, people who manage to escape the clutches of cancer and sepsis experienced what was consider the natural process of aging. Their body slowly breaks down until its immunocompromised and becomes susceptible to any minor malady.

It's being discovered that this process of aging is not as necessary as we thought. Rather just a byproduct of evolution.
But if we are to say that aging is a disease, what evidence is there to support this?

Sources:
Lifespan: Why We Age and Why We Don't Have To - David Sinclair

Sirtuins, Metabolism, and DNA repair - www.ncbi.nlm.nih.gov/pmc/articles/PMC4254145/

Sirtuins in Epigenetic Regulation - www.ncbi.nlm.nih.gov/pmc/articles/PMC4610301/

Unlocking the Secrets of Longevity Genes - pubmed.ncbi.nlm.nih.gov/16502611/

Sirtuins, a promising target in slowing down the ageing process - www.ncbi.nlm.nih.gov/pmc/articles/PMC5514220/

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