Your mind is central to your identity. The sharpness of your thinking, your ability to communicate and connect with others, and the rich trove of memories you’ve collected over a lifetime all have enormous value.

As you get older, you may notice changes in some of your thinking skills, including cognitive decline. Cognitive decline is the gradual loss of thinking abilities such as:

-learning
-remembering
-paying attention
-reasoning
https://www.healthline.com/health/cognitive-decline

Some cognitive decline can occur as adults age, but frequently forgetting how to perform routine tasks, for example, is not a normal part of aging and can affect a person’s ability to live and function independently.
https://www.cdc.gov/aging/data/subjective-cognitive-decline-brief.html