In an interview with a Czech neurologist, I've heard that much of the mental health (such as the ability to reason, communicate and process information) in older age mainly depends on the amount of informational ballast we create. The argument states that with this additional information, we unnecessarily wear some of the basic mental mechanisms off (Even though there's not the effect of "too much memories").
I want to express that the mental processes gradually damage by use. Is the verb "wear off"used correctly here? What if I wanted to say "all tools are being damaged by use", would the phrase fit here?