The Mayo Clinic, at its online website, reports that the jury is still out on whether healthy lifestyle choices can “prevent or reverse cognitive decline.” That said, they nonetheless add, “there’s no harm in including these strategies in your general wellness plan.” Specific strategies they recommend are summarized as follows:
Regular exercise – May lift mood.
A diet low in fat and rich in fruits and vegetables – May protect cognitive health.
Omega-3 fatty acids – Eating fish may be the way to go.
Social engagement and intellectual stimulation – May help preserve mental function.
As you can see, the operative word is “may.”