Vitamin B6 levels linked to cognitive decline
At the start of this study, 155 healthy adults, age 60 to 88, had normal cognitive function test scores. Three-quarters of the participants regularly consumed foods fortified with B-vitamins. After four years, cognitive test scores had decreased slightly, by the amount doctors had expected to see. But, in one out of four participants (27 percent), the rate of cognitive decline was greater than doctors had expected. Doctors found those with lower vitamin B6 levels were 3.5 times more likely to have accelerated cognitive decline.

Reference: Nutrients; 2017, Vol. 9, No. 1, 53.
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