mental deterioration meaning in English

精神衰退
精神颓废

We could find ways to preserve bodily health but would fail to put off age - related mental deterioration
我们可以找到保持身体健康的方法，但无法推迟与老龄有关的脑力衰退。
As people grow older , their reaction times become longer and the likelihood of inattention increases together with a general physical or mental deterioration
年老的行人人年纪越老，反应越慢，注意力减弱，体力及智力一般都会衰退。
Wednesday , dec . 6 ( healthday news ) - - cats can deelop a feline form of alzheimer ' s disease , say u . k . and u . s . researchers who identified a protein that can build up in brain nere cells and cause mental deterioration
星期三， 12月6日（每日健康新闻) ?英国和美国的研究人员称，猫也能患一种猫型阿尔茨海默病，他们发现一种能在脑神经细胞中累积并导致精神衰退的蛋白。