According to professor McKenzie, it is very difficult to specify the effects of each job and the way it affects the cognitive function of a person, so people should always choose their job according to their cognitive abilities.
On the other hand, Geraint Johnes, professor of economics at Lancaster University Management School, maintains:
“The research looks only at over-40s, and so cannot make the claim that over-40s are different from any other workers. What the authors find is that cognitive functioning improves up to the point at which workers work 25 hours a week and declines thereafter. Actually, at first the decline is very marginal, and there is not much of an effect as working hours rise to 35 hours per week. Beyond 40 hours per week, the decline is much more rapid.”
Therefore, scientists do not have a clear explanation of these findings and the reality that working more than 30 hours a week negatively affects the brain, even though we all know that a lot of work leads to tiredness and stress.
Yet, these attempts raise the awareness for needed changes in the system, since it is completely natural that the elderly are no longer able to do the same work as they did forty years ago.
What you can do now is to choose a job that you enjoy doing, in order to lower the stress it causes, and minimize its negative consequences on health.
From: 77recipes