Starting Dementia Prevention from the Dining Table: Eight Brain-Protecting "Brain Foods" and the Japanese-Style MIND Diet Guide

Chapter 1: The Current State of Dementia and the Role of "Diet"

In Japan, there were approximately 6.02 million people with dementia in 2020. The Ministry of Health, Labour and Welfare estimates that this number will reach about 7.3 million by 2035. While genetic factors play a role, the combination of high blood pressure, diabetes, obesity, and lack of exercise also increases risk. Neurologists emphasize that "dietary intervention is a primary prevention that anyone can start immediately."

A cohort study from Rush University in the U.S. reported that those who adhered closely to the MIND diet had a 53% lower risk of developing dementia compared to those with low adherence nia.nih.gov.

Chapter 2: Dr. Plagg's Recommended 8 Brain Foods

The German newspaper Fuldaer Zeitung featured Dr. Plagg's recommended foods, as shown in the table below. There are clear intake frequency guidelines for daily and weekly consumption, making it easy to incorporate into habits fuldaerzeitung.de.

Additionally, extra virgin olive oil is the top recommended cooking oil. A meta-analysis by JAMA Network found that consuming 1.5 teaspoons of olive oil daily reduced dementia-related mortality by 28% verywellmind.com.

Chapter 3: Updated Evidence: Ultra-Processed Foods and the Brain

A study tracking over 10,000 Brazilian adults for seven years reported significant cognitive decline in groups consuming more than 20% of their total energy from ultra-processed foods jamanetwork.com. In Japan's National Health and Nutrition Survey, younger generations have a higher intake of snacks and instant noodles. Advanced glycation end-products and excessive salt may promote inflammation in cerebral blood vessels, accelerating neurodegeneration.

Chapter 4: Adapting the MIND Diet to the Japanese Table

4-1 Switching Staple Foods to Brown Rice Blend

A blend of 2 parts white rice to 1 part brown rice can reduce digestive burden while enjoying the benefits of whole grains. Adding a few drops of olive oil during cooking enhances flavor and moderates post-meal blood sugar.

4-2 Adding "Extra Spinach" to Miso Soup

Simply adding a handful of raw spinach to a bowl of miso soup covers one serving of the key leafy greens in the MIND diet.

4-3 Snack on "Frozen Blueberries + Unsweetened Yogurt"

Easily available in Japan's frozen food sections and cost-effective. 100g covers one serving of berries.

4-4 Weekend "Canned Mackerel Curry"

Incorporate canned mackerel, rich in EPA and DHA, into a tomato-based spice curry. This balances preservation and ease of cooking while meeting fish intake goals.

Chapter 5: Five Food Categories to Avoid

1. Sweets and Desserts: Less than 5 times a week.

2. Red Meat (Beef, Pork): Less than 4 times a week.

3. Cheese: Less than once a week.

4. Fried Foods: Less than once a week.

5. Butter/Margarine: Less than 1 teaspoon a day.
   These are all categorized under the "restricted group" in the MIND diet, commonly high in saturated fats, AGEs, and excessive salt.
   
   
   
   

Chapter 6: Lifelong Effects—Insights from Recent Studies

A meta-analysis published in March 2025 found that participants who maintained the MIND eating pattern from their 40s had an average MMSE score 2.1 points higher in their 70s pmc.ncbi.nlm.nih.gov. This corresponds to about a 7-year difference in cognitive function in terms of actual age. Conversely, high-risk individuals who did not improve their diet had persistently high levels of inflammatory markers (CRP, IL-6) from ultra-processed foods.

Chapter 7: The Significance of Community and "Shared Meals"

Japan's traditional "family gatherings" and community "potluck dinners" promote social interaction and help alleviate stress. With the increasing concern of elderly living alone, intentionally creating opportunities to gather around the table can enhance synergies in dementia prevention.

Chapter 8: Practical Checklist

• □ Include brown rice or whole grain bread in one of the three daily meals

• □ Ensure 6 servings of leafy greens per week

• □ Carry 30g of nuts daily

• □ Keep frozen berries on hand

• □ Have oily fish or canned mackerel dishes once a week

• □ Use olive oil as the main fat

• □ Limit processed snacks and fried foods to "event meals"
  
  
  
  

Final Chapter: Protecting the Brain While Enjoying Life—A Dietary Strategy for the 100-Year Life Era

Dementia is not a "sudden aging phenomenon" but an aspect of "lifestyle diseases" that manifests as the sum of life from a young age. The MIND diet is not about special superfood beliefs but is based on the simple philosophy of **"a diverse plant-based diet supplemented with fish and moderate poultry for protein, and using olive oil to connect flavor and health."**

Let's incorporate "the future of the brain" into our meals one dish at a time, utilizing Japan's seasonal ingredients—this is the conclusion of this article.

List of Reference Articles

1. Silja Ommert (June 27, 2025) "Wissenschaftlerin rät zu diesen acht Lebensmitteln gegen Demenz" Fuldaer Zeitung fuldaerzeitung.de

2. Plagg, B. (2024) Smart bis zum Sarg – Gesundes Gehirn, starkes Gedächtnis Edition Raetia.

3. Harvard T.H. Chan School of Public Health “Diet Review: MIND Diet” (2024) nutritionsource.hsph.harvard.edu

4. National Institute on Aging “MIND and Mediterranean diets linked to fewer signs of Alzheimer’s brain pathology” (2023) nia.nih.gov

5. Gonçalves et al. “Association Between Consumption of Ultraprocessed Foods and Cognitive Decline” JAMA Neurology (2023) jamanetwork.com

6. Verywell Mind “Research Shows This Diet Can Decrease Your Dementia Risk” (2024) verywellmind.com