Theories of ageing

Just as the ageing phenotype shows marked individual variation, so there are many genetic and non-genetic influences which interact to produce that phenotype. Much of the confusion inherent in theories of ageing has resulted from ambitious claims made on behalf of processes and systems that are only marginally testable, and so cannot be proved or disproved. Mainly as a matter of descriptive convenience, the different theories of ageing that have been advanced can be collated into several groups. (1!>

Hearing Aids Inside Out

Hearing Aids Inside Out

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