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Eating a Mediterranean diet rich in fruits, vegetables and whole grains may not protect against Alzheimer's disease, as previously thought.
Scientists have believed for many years that this diet actually protects the brain, but the modern study of two decades has not found such a link.
The study provides "convincing evidence" that eating healthy does not reduce the risk of dementia, the scientists said.
Researchers from the University of Montpellier followed about 8,200 healthy and non-dementia adults at the start of the study and asked them to fill out questionnaires about their diet in order to allow the experts to study. 39, evaluate the quality of their diet.
The researchers continued until 2017, under the leadership of Dr. Tsenim Akbali, and divided the volunteers into three groups, depending on the health of their diet. They then compared the rates of dementia among the groups, but found that "there is no big difference".
Healthy eating includes the consumption of vegetables, fruits, whole grains, nuts, legumes, omega-3 fatty acids and several polyunsaturated fatty acids.
The bad food is to consume a lot of sugary drinks, juices, red meat, processing, unsaturated fats and salt.
The study has been severely criticized by experts for age-related diseases because it has not explored other aspects of lifestyles related to dementia, such as smoking.
Professor Clive Ballard of Exeter University said the study was "very limited", adding that "the strongest evidence" has so far confirmed some of the benefits of follow a Mediterranean diet.
The subtle link between diet and dementia remains unclear, but "the best evidence to date" suggests that healthy foods may play a role in maintaining brain health.
Source: Daily Mail.
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