Regular consumption of whole-grain foods may help preserve memory and mental clarity in older age, according to Chinese scientists. The findings were published in the Food & Function (F&F) journal.

More than five thousand people participated in the study, with an average age of 64. Researchers from Chongqing and Beijing analyzed participants’ diets and compared the data with the results of cognitive tests assessing memory, attention, and thinking speed.

The results showed that those who consumed about 75 grams of whole-grain products daily were 18% less likely to experience mild cognitive impairments and performed better on all tests overall. A particularly strong link was observed between the amount of whole-grain foods in the diet and levels of verbal memory and attention.

According to the scientists, the positive effects may be due to the high content of fiber, B vitamins, magnesium, and antioxidants in whole-grain foods—all of which help protect neurons and maintain vascular health.