"by aging" is a correct and usable phrase in written English.
It is used to describe the process of becoming older. For example: "The wine's flavor improved by aging in oak barrels for several years."
Would I be surrounded by aging hippies?
The maintenance of neuronal homeostasis is severely threatened by aging.
Proteasomal and autophagosomal degradation pathways were also impacted by aging.
These increases were not modified by aging in control rats.
Neither the Challenger accident nor the Columbia one appears to have been caused by aging parts.
In a country long ruled by aging kings, M.B.S. was young, tall, and transparently ambitious.
A further unraveling would undermine global growth prospects already clouded by aging populations and miserable productivity.
Methane release is a systemic problem, contributed to in part by aging distribution infrastructure.
Some spots caused by aging and sun exposure are benign, while others need medical attention.
Neurodegenerative phenomena are associated with mitochondrial dysfunction and this could be exacerbated by aging.
Both circadian and homeostatic sleep-regulatory processes are affected by aging.
