> consistently working in an occupation with intermediate or high occupational PA was linked to an increased risk of cognitive impairment." I think this conclu

> consistently working in an occupation with intermediate or high occupational PA was linked to an increased risk of cognitive impairment." I think this conclusion might be totally unwarranted: I suspect they did not control for how much the study subjects used their brain over the years of the study, let alone other correlates of jobs involving more physical labour.