Harvard nutritionist’s guide to the No. 1 brain-boosting nutrient and the best ways to consume it

There is no one-size-fits-all way to prevent dementia. That said, a vast number of studies have isolated certain nutrients that may help prevent the loss of cognitive functioning with age, like perception, attention and decision making.

Three types of neuroprotective nutrients have received the most interest from experts like myself: antioxidants, B vitamins, and polyunsaturated fatty acids. Antioxidants combat free radicals that can damage brain cells, B vitamins play an important role in brain cell function, and PUFAs help promote the growth of new brain cells.

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