I have seen articles about increases of dementia, and probably submitted them here. Some say it is the phosphates. Nonetheless, it is far from being a "oh well" situation (I just posted earlier, it is doom), and yes, more references would be in order.

My impression is that "«people»" are typically "trying less and less", and taking more and more bad (regressive) compromises. If there is an acquired physiological issue I am not sure, and it certainly calls for getting more details: I clearly see a cultural issue.