BOSTON: A new study has found that regularly consuming large amounts of ultra-processed foods may significantly increase the risk of dementia and cognitive decline, adding to growing concerns about the long-term health effects of heavily processed diets.

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Dementia remains a growing public health concern Ultra-processed foods dominate modern diets

Researchers at the Harvard T.H. Chan School of Public Health reported that individuals who consumed more than one kilogram of ultra-processed foods daily faced a substantially higher risk of developing dementia and other cognitive impairments compared with those who consumed lower amounts.

According to the findings, high consumption of ultra-processed foods was associated with a 58 percent increase in dementia risk and a 46 percent increase in the likelihood of cognitive decline.

Dementia remains a growing public health concern

Dementia is a progressive condition that affects memory, thinking abilities and behavior. Health experts have long identified it as a major public health challenge, particularly in aging populations.

In the United States, more than 7.2 million people are currently living with Alzheimer’s disease, the most common form of dementia. According to the Alzheimer’s Association, that number could rise to nearly 13 million by 2050.

Researchers said the findings may help explain some of the factors contributing to the increasing prevalence of cognitive disorders and could support future efforts aimed at prevention and risk reduction.

Ultra-processed foods dominate modern diets

Data from the National Institutes of Health indicate that ultra-processed foods now account for approximately 70 percent of the average American diet, a figure that has increased significantly over the past five decades.

Food manufacturers often modify these products to improve flavor, appearance and shelf life, making them more appealing and convenient for consumers.

Researchers at the University of Kansas have previously noted that many ultra-processed foods are designed to be highly palatable through combinations of salt, sugar and fat that encourage repeated consumption.

The study adds to a growing body of evidence suggesting that dietary patterns may play an important role in long-term brain health and cognitive function.