>I've hit my early 30s and I've started noticing that I'm far more prone... That's a really young age to have any sort of marked age-related cognitive decline.

>I've hit my early 30s and I've started noticing that I'm far more prone... That's a really young age to have any sort of marked age-related cognitive decline. It might be explained by something else--even something as "simple" as insufficient quality sleep or stress, both of which can wreak havoc on cognitive ability.