What are the characteristics of cognitive health in the elderly?

The core characteristic of cognitive health in the elderly is actually "functional adaptation" - that is, the cognitive level is sufficient to match one's own life and social needs without affecting the quality of independent life, rather than the complete absence of age-related cognitive decline.

I have been doing cognitive screening for the elderly in the community for the past two years, and I have met many elderly people in their 70s and 80s. Occasionally they can’t remember the names of strangers they just met, put extra salt in cooking, and double check whether they have brought their keys with them when going out. But these small omissions do not affect their normal life at all - just like Aunt Zhang, 78 years old, who I met last week, turned around and forgot the previous day. Tian Gang watched the TV series, but he can accurately remember the name of the main character who goes to the University for the Elderly to take calligraphy classes every Tuesday and Thursday. On the 15th of every month, he sends home-made pickles to his great-nephew who is far away in his hometown. He even uses coupons to help old sisters in the community get tickets for Huimin performances. This kind of occasional forgetfulness is a normal manifestation of aging and completely falls under the category of cognitive health.

In fact, there is no completely unified standard for judging cognitive health in the academic world. One school of research focuses more on the memory dimension, believing that the retention of recent memory is the core indicator. Others believe that executive function is more critical - simply put, it is the ability to coordinate things, such as cooking a meal for the whole family. Can you arrange the order of soaking rice, washing vegetables, and finally stir-frying, so as not to burn the pot in a hurry? However, no matter which viewpoint comes from different perspectives, there are still many common references in actual evaluation scenarios. If you observe the elderly people around you, you will find that most cognitively healthy elderly people are very receptive to new things. It does not mean that they must be able to play short videos or register online. At least they have a new rice cooker and a new TV remote control at home. After thinking about it for a day or two, they can always figure out the basic operations. There will be no situation where they cannot remember the steps after being taught three or five times.

Many people don’t know that cognitive state and emotional state are actually linked. Most cognitively healthy elderly people can maintain a relatively stable mood. Even if they encounter bad things such as their children’s work is not going well or their old friend is sick, they can slowly adjust to it after a few days. They will not be stuck in anxious and depressed moods for a long time, let alone have no reason to be suspicious - for example, they always suspect that their family members are stealing their money, and their neighbors are talking bad about them behind their backs. This kind of performance is often an early sign of cognitive impairment, and is not a normal sign of "an old fool".

Speaking of which, there is an interesting controversy. Many of the current common cognitive screening scales are formulated with reference to the life scenarios of urban elderly people, and they are prone to bias when applied to rural elderly people. Before I went to a suburban village for screening, there was a 72-year-old Uncle Li, who had never been to school in his life. He could not do the arithmetic questions in the scale, nor could he draw the designated clock. However, he could clearly remember the day when his three acres of fruit trees needed to be sprayed and the day when they needed to be bagged. He went to the market to sell apples and settle accounts. No matter how much money is spent, his score would not be up to standard if measured on a unified scale, but we all know that his cognitive status is completely healthy. Screening in many places is now slowly adjusting, and a lot of assessment items adapted to local life scenes have been added, just to avoid this kind of misjudgment.

In the final analysis, there is no perfect standard answer for cognitive health. Just like it is normal for people’s legs to be less strong when they are old. As long as they can walk on their own without being supported by others, it is good. The same is true for cognition. It really doesn’t matter if you forget things a little. As long as you don’t delay your life and can do something you like, you are already in a good state.