A recently published study conducted by Tufts researchers suggested a diet rich in fruits and vegetables (especially flavonoid-rich choices like apples, pears, berries, and tea) was associated with lower risk of developing Alzheimer’s disease and related dementias. The authors reported that monthly flavonoid intake equivalent to what one would get from eating one and a half apples a month was associated with two- to four-fold higher risk of dementia when compared to consuming flavonoids found in, for example, eight apples, seven and a half cups of blueberries or strawberries, and 19 cups of tea per month. Any plant-rich dietary pattern that includes a variety of fruits and vegetables is likely to provide a level of flavonoids associated with lower risk.
The results of this study do not prove cause and effect, and findings are generalizable only to middle-aged or older adults of European descent. That said, the potential to reduce the risk for incurable dementias is yet one more reason to include fruits and vegetables throughout your day.