Consumption of high-calorie foods increases the risk of cognitive impairment, memory loss and mental health problems, a study shows.

U.S. researchers are tracking the eating habits of 1,200 people between the ages of 70 and 89. Participants also solve cognitive tests. In the study, 163 people developed memory problems, and the risk was higher for those who consumed the most calories.
Men and women who eat at least 2,143 calories a day have been found to be more than twice as likely to have cognitive problems as those who consumed 1,526 calories or less.
The study did not prove a causal link between high-calorie diet, overeating and dementia, but showed an increased risk, the researchers explained. 
According to the research team, following a low-calorie and healthy diet in old age helps prevent cognitive problems and prevent the development of Alzheimer's disease.
For the preservation of memory, it is important to regularly exercise, as well as activities such as solving a puzzle, reading books, etc., scientists say.
Engaging attention in this way stimulates brain activity and leads to a reduction in beta-amyloid plaques, which are the cause of the development of Alzheimer's.