192-3-879
Most intriguingly of all, it seems that it can slow the process of ageing. Biologists have known for decades that feeding animals near-starvation diets can boost their lifespans dramatically. Dr Levine was a member of the team which showed that an increased level of autophagy, brought on by the stress of living in a constant state of near-starvation, was the mechanism responsible for this life extension.
The theory is that what are being disposed of in particular are worn-out mitochondria. These structures are a cell’s power-packs. They are where glucose and oxygen react together to release energy. Such reactions, though, often create damaging oxygen-rich molecules called free radicals, which are thought to be one of the driving forces of ageing. Getting rid of wonky mitochondria would reduce free-radical production and might thus slow down ageing.
A few anti-ageing zealots already subsist on near-starvation diets, but Dr Levine’s results suggest a similar effect might be gained in a much more agreeable way, via vigorous exercise. The team’s next step is to test whether boosted autophagy can indeed explain the life-extending effects of exercise. That will take a while. Even in animals as short-lived as mice, she points out, studying ageing is a long-winded process. But she is sufficiently confident about the outcome that she has, in the meantime, bought herself a treadmill.

A. 어휘
intriguingly 흥미 있게도. slow 지연시키다.
process of ageing 老化(노화) 과정. starvation 餓死(아사).
lifespans 수명. brought on 惹起(야기)하다, 가져 오다.
constant state 지속적인 상태. life extension 생명 연장.
what are being disposed of 제거 되고 있는 것.
power-packs 電源函(전원함)〔변압기 정류기 따위〕
glucose 포도당. react 반응하다. damaging 破損(파손)하는.
molecules 分子(분자). free radicals 활성 산소. radicals 급진주의자, 과격파.
wonky 미덥지 않은, 해로운. zealots 열광자. subsist 살아가다, 존속하다.
agreeable 즐거운. via ...를 통해서. vigorous 활발한, 强健(강건)한.
while 시간. long-winded 지루한. sufficiently =so 충분히