Senescence

Senescence () or biological aging is the gradual deterioration of functional characteristics in living organisms. Whole organism senescence involves an increase in death rates or a decrease in fecundity with increasing age, at least in the later part of an organism's life cycle. However, the effects of senescence can be delayed.

Extends: Senescence, [Ailments of unknown cause](https://wikipedia.org.ai/Ailments of unknown cause), [Cellular processes](https://wikipedia.org.ai/Cellular processes), [Old age](https://wikipedia.org.ai/Old age), [Causes of death](https://wikipedia.org.ai/Causes of death)