Nutrition and cognitive impairment

Area of Science:

• Public Health
• Neuroscience
• Nutritional Science

Background:

• Dementia, including Alzheimer's disease, is a growing global public health concern, with increasing patient numbers projected by 2050.
• Environmental factors, particularly diet, are closely linked to dementia development.
• Patients with dementia often exhibit nutritional deficiencies in vitamins and fatty acids, necessitating dietary correction.

Purpose of the Study:

• To review the role of diet in dementia prevention and management.
• To highlight the importance of early-life nutritional interventions for cognitive health.
• To emphasize the benefits of complete dietary patterns, such as the Mediterranean diet, over isolated nutrients.

Main Methods:

• Literature review on nutritional recommendations for preventing cognitive impairment.
• Analysis of studies focusing on complete dietary patterns versus specific nutrients.
• Focus on the Mediterranean diet's composition and its relevance to dementia.

Main Results:

• Delaying dementia onset by five years could halve its prevalence.
• Cardiovascular risk factors are directly associated with dementia development, underscoring the importance of diet.
• The Mediterranean diet, characterized by high intake of vegetables, fruits, nuts, fish, and olive oil, is of significant interest for dementia prevention.

Conclusions:

• Dietary prevention of dementia should begin early in life.
• Complete dietary patterns, like the Mediterranean diet, are more effective than single nutrient supplementation for cognitive health.
• The Mediterranean diet offers a promising strategy for reducing or delaying dementia prevalence.