What are the characteristics of cognitive health in the elderly?

The current consensus among clinical and academic circles is that the core characteristics of cognitive health in the elderly are that cognitive function matches the baseline of one's own age, has no abnormal pathological decline, and does not affect daily life and social participation at all, and does not need to be benchmarked with the cognitive level of young people.

I have been doing cognitive screening work for the elderly in the community for almost four years. Among the thousands of elderly people I have come into contact with, the cognitive health status of the elderly varies greatly. Some can still recite Tang poems and teach their grandchildren to do homework at the age of 80, while some often forget things when they are 70. However, as long as they meet the above core standards, they are all healthy. Just like Uncle Wang, who came for the screening last week. He is 76 years old. He usually forgets whether he has taken antihypertensive drugs and has to take out the pill box to count the remaining pills before he dares to take them. However, he runs a shoe repair stall at the entrance of the community and never misses the reckoning. Regular customers know their preferences very well, and he can pick up anyone who needs soft rubber for their shoes or wear-resistant materials. He can also purchase goods and contact suppliers by himself. Some time ago, he also learned new leather care techniques from short videos and added new services to himself. Previously, my children were worried about whether he would develop dementia. After testing, his scores on all cognitive dimensions were within the normal range for his peers, so there was no problem at all.

However, there are now different opinions on the criteria for determining cognitive health in the academic community. One group of scholars who are more rigorous believes that all cognitive dimensions such as memory, executive function, language ability, visuospatial ability, and orientation must be higher than the average level of people of the same age to be considered healthy. The other group is more inclined to clinical practicality. The view is that as long as there is no abnormal decline beyond normal aging, even if a certain ability is weak, it is not abnormal as long as it does not affect life. After all, many people are road addicts when they are young, and they still cannot find the exit when they go shopping. This is not the same as being unable to find home when going out due to cognitive decline.

In fact, if you use an analogy, you will understand. The cognitive system of an elderly person is like an old mobile phone that has been used for more than ten years. There is no need to require it to run the latest large-scale games. As long as it can make calls, watch videos, pay bills smoothly, and have common functions without problems, and does not freeze frequently, it is a useful machine. Many family members get nervous when they see an elderly person forgetting things. In fact, there is a clear difference between normal aging forgetfulness and abnormal cognitive decline. Even if a cognitively healthy elderly person occasionally forgets something, most of them can think of it later, or remember it after being reminded once. They will not ask the same question over and over again, and will not have problems that directly affect normal life, such as not recognizing people, being unable to calculate the grocery bill, or finding their way home when they go out. If the latter symptoms really occur, they need to go to the cognitive department of the hospital as soon as possible to check whether there is pathological decline.