Old people's psychology and spirit have changed, such as not talking, being in a daze, listless, sleeping and so on. No pathological abnormalities were found. It may be just a mental and psychological reason, and the specific reasons may be different. Here's one of the most likely reasons.

At this time, it may be that the old people's spiritual and psychological life perception and life confidence have changed greatly, which leads them to lose their original optimistic and confident life goals. It is the aging of their body and energy and the abandonment of family and social responsibilities that make them feel that their ability and social importance have decreased. They may doubt their original judgment on the importance of life and begin to deny their evaluation of the meaning of life.

That is to say, the elderly may directly relate their life meaning to whether they can continue to undertake family social responsibilities, and thus have a negative evaluation of their life meaning, which is a common form of depression for some elderly people.

If this is the reason and the time is not long, don't rush to change the current state of the elderly, which may be just a temporary negative psychological state of the elderly. Once the old people get used to the idle life, they no longer associate the irresponsible life with the low value of life. Generally speaking, the elderly can survive this low tide by themselves. Of course, as a younger generation, it can also help guide the elderly to give up the idea that they have no responsibility to reduce the value of life and help them tide over the low tide faster.

If this situation lasts for a long time (more than a few months), we should pay attention to consciously communicating with the elderly and guide them to give up the psychology of underestimating their inner values and adapt to a happy life without responsibility.

This may be just one of the reasons for your reference.