high fiber diets lower risk of dementia

What if what you eat now could help prevent you from developing dementia later? You’d do it, right? Do what? This new study will tell you.

Recently, a new idea has emerged that suggests that there is an interaction between your brain and your gut. One of the ways that interaction may be important to you is that the bacteria in your gut, the gut microbiome, may help prevent dementia by influencing brain plasticity and cognitive function. And one important way to influence your gut microbiome is fiber.

That raises the question of whether a diet higher in fiber can help prevent dementia.

To test that theory, researchers analyzed the diets of 3,739 people and then followed them for an average of 19.7 years to see if there was an association between eating fiber and risk of dementia requiring care. They found that people who ate more fiber did have a lower risk of dementia requiring care. The ones who got the most fiber in their diet were 26% less likely to develop dementia. The benefit was greater for soluble fiber than for insoluble fiber.

Soluble fiber is found abundantly in fruits, vegetables, legumes and oats.


Nutritional Neuroscience. Feb 2022;doi.org/10.1080/1028415X.2022.2027592




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