期刊
EXPERIMENTAL PHYSIOLOGY
卷 102, 期 9, 页码 1067-1074出版社
WILEY
DOI: 10.1113/EP086205
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资金
- MRC [G0601333, G0500997] Funding Source: UKRI
- Medical Research Council [G0601333, G0500997] Funding Source: researchfish
- Medical Research Council [G0500997, G0601333] Funding Source: Medline
Understanding human ageing is a major challenge for the physiological sciences. It is made all the more urgent by the survival of inreasing numbers of people to advanced old age and by a shift in the underlying causes of the continuing increase in life expectancy. The previous increase was caused almost entirely by the prevention of deaths in the early and middle years of life; a process that has seen such success that in developed countries there remains little scope for significant further increase from this cause. The more recent increase is driven by something new. We are reaching old age in generally better health, and it is the death rates at advanced ages that are now falling fast. At the same time, biology has established that there is almost certainly no fixed programme for ageing, which is caused instead by the lifelong accumulation of damage. It is becoming evident that the ageing process is much more malleable than we used to think. We need urgently to establish the factors that govern this malleability and to identify the interactions between, on the one hand, intrinsic biological processes that drive the many chronic diseases and disabilities for which age is by far the largest risk factor and, on the other hand, the social and lifestyle factors that influence our individual trajectories of health in old age. Ageing is no longer as mysterious and intractable a process as used to be thought, offering new opportunities for contributions from other branches of the physiological sciences.
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