Eating Ultraprocessed Foods Tied To A 58% Higher Risk Of Developing Dementia

People who eat complete 2 pounds of ultraprocessed foods for illustration hot dogs and cookies a time are astatine a 58 percent accrued consequence of processing dementia and a 46 percent heightened consequence for cognitive impairment, an alarming caller study from researchers astatine Harvard’s T.H. Chan School of Public Health shows.

Dementia has agelong been a awesome problem successful nan U.S. — 1 that is projected to worsen successful coming years. The chronic information affects people’s memory, characteristic and behavior, devastating some patients and their loved ones.

There are much than 7.2 cardinal Americans surviving pinch Alzheimer’s disease, which is nan astir communal shape of dementia. That number could beryllium adjacent to 13 cardinal by 2050, nan Alzheimer’s Association says.

The findings could thief explicate really America sewage here, and pass early steps experts urge to reverse course.

Around 70 percent of nan American fare has go ultraprocessed over nan past half century, according to nan National Institute of Health, arsenic companies edited their products’ flavor, colour and support life. The products were designed to beryllium much "hyperpalatble" to consumers, featuring tempting combinations of salts, fats and sugars, Kansas University researchers say.

Since then, years of investigation has uncovered nan harms of these foods, including likewise antagonistic impacts connected encephalon health, nan heart, nan immune strategy and different systems successful nan body.

It’s not conscionable nan awesome eaters that are astatine risk, too.

Even mean levels of depletion were a problem for nan brain, nan caller study found. That’s astir a lb aliases less.

“Just to say, ‘well, I don’t eat each my calories from ultraprocessed foods, I’m safe.’ It really shows location whitethorn not beryllium a safe level,” Cindy Leung, an subordinate professor of nationalist wellness nutrition, told The Wall Street Journal.

The researchers analyzed nan wellness of much than 5,300 older adults complete nan people of adjacent to a decade. The participants were from nan University of Michigan’s Health and Retirement Study, which includes wellness information gathered from astir 20,000 Americans and is supported by nan National Institute connected Aging.

Participants were asked questions astir their nutrient intake, arsenic good arsenic smoking, intoxicant use, activity level and different factors that impact encephalon and wide health.

Comparing nan information revealed that group who ate processed meats had nan highest consequence of dementia and cognitive impairment, specified arsenic bacon and sliced ham.

But because nan study’s information is self-reported, nan researchers opportunity they can’t really beryllium ultraprocessed foods are nan origin of dementia and cognitive decline.

Still, ultraprocessed foods are besides tied to consequence factors for dementia, specified arsenic obesity, gut changes and cardiovascular disease.

“[Ultraprocessed foods] person been associated pinch antagonistic changes successful nan endocrine strategy and nan gut microbiota, and these could lead to antagonistic neurological outcomes,” Barbara Cardoso, a elder teacher of nutrition dietetics and nutrient astatine Australia’s Monash University, told CNN successful April.

“Further, [they] person been linked to known cardiovascular consequence factors for dementia, specified arsenic diabetes, hypertension, obesity and precocious LDL cholesterol, and arsenic specified could indirectly effect cognitive health,” she said.

Cardoso was nan writer of a study showing eating moreover one serving of ultraprocessed foods a day whitethorn raise nan consequence of dementia.

Her investigation followed a May 2025 study from Virginia Tech University that recovered group who ate astatine slightest 1 serving of ultraprocessed nutrient each time had a 17 percent summation successful cognitive issues. Those who drank a serving of sugar-heavy soda had a six percent summation successful cognitive impairment.

Fortunately, experts opportunity group tin trim their consequence by forgoing ultraprocessed foods.

People who ate nan astir minimally processed foods, for illustration fruits and vegetables, had a 41 percent little consequence of dementia compared to others, nan Harvard study found.

“There are things that you tin change,” Brenda Davy, a professor of quality nutrition, foods, and workout astatine nan school, said successful a statement. “It’s moderation and being reasonable and balanced successful your dietary choices.”