‘Troubling but not surprising’
Commenting on the study, Percy Griffin, PhD, director of scientific engagement for the Alzheimer’s Association, said there is “growing evidence that what we eat can impact our brains as we age.”
He added that many previous studies have suggested it is best for the brain for one to eat a heart-healthy, balanced diet that is low in processed foods and high in whole, nutritional foods, such as vegetables and fruits.
“These new data from the Alzheimer’s Association International Conference suggest eating a large amount of ultraprocessed food can significantly accelerate cognitive decline,” said Dr. Griffin, who was not involved with the research.
He noted that an increase in the availability and consumption of fast foods, processed foods, and UPFs is due to a number of socioeconomic factors, including low access to healthy foods, less time to prepare foods from scratch, and an inability to afford whole foods.
“Ultraprocessed foods make up more than half of American diets. It’s troubling but not surprising to see new data suggesting these foods can significantly accelerate cognitive decline,” Dr. Griffin said.
“The good news is there are steps we can take to reduce risk of cognitive decline as we age. These include eating a balanced diet, exercising regularly, getting good sleep, staying cognitively engaged, protecting from head injury, not smoking, and managing heart health,” he added.
Past research has suggested that the greatest benefit is from engaging in combinations of these lifestyle changes and that they are beneficial at any age, he noted.
“Even if you begin with one or two healthful actions, you’re moving in the right direction. It’s never too early or too late to incorporate these habits into your life,” Dr. Griffin said.
The study had no specific funding. Dr. Gonçalves and Dr. Griffin have reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.