Harvard Medical School: Diet Tips to Lower Alzheimer's Risk

Written by Nguyenjessica 

Published on May 8  2025

If you're curious about how to keep your brain sharp and reduce the risk of Alzheimer's through diet, you're in the right place. Experts from Harvard Health Publishing have some super practical diet tips, and the Mediterranean diet is the real star here. Let's dive in!

Key Points

The Mediterranean diet is all about eating lots of veggies, fruits, whole grains, nuts, fish, and olive oil, while cutting back on red meat and processed foods. It fights inflammation, reduces oxidative stress, and supplies brain-boosting nutrients to lower the risk of Alzheimer's.


This diet is a game-changer for brain health. It reduces inflammation, provides antioxidants, supports heart health, and supplies key nutrients like Omega-3 fatty acids and vitamin E. These benefits help keep your brain agile and slow down aging.


Start with the foods you love. Swap in more whole grains, nuts, and olive oil. Try new recipes like Greek salad or grilled salmon with quinoa. Be flexible and enjoy the process. Your brain will thank you!

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Table of content

What Is the Mediterranean Diet?

Why Is the Mediterranean Diet So Powerful?

What Foods Are in the Mediterranean Diet?

How to Create Your Brain-Healthy Menu?

Mediterranean Diet Recipe List

What Is the Mediterranean Diet?

The Mediterranean diet is a traditional eating style from Mediterranean countries. It's not a strict diet plan but a healthy lifestyle. It focuses on natural, fresh foods like veggies, fruits, whole grains, nuts, fish, and olive oil. Think of it as a way to eat healthier without feeling deprived.

Why Is the Mediterranean Diet So Powerful?

This diet is a big deal for brain health. It can lower the risk of cognitive decline and Alzheimer's. Here's how:

 

  • Fights Inflammation: Foods like olive oil, nuts, and fish reduce inflammation in the brain.
  • Antioxidant Power: Lots of fruits and veggies mean lots of antioxidants to fight off free radicals and keep your brain young.
  • Heart Health: Whole grains, nuts, and olive oil support a healthy heart, which means better blood flow to the brain.
  • Nutrient-Rich: Omega-3 fatty acids and vitamin E are essential for brain function, and this diet is packed with them.

What Foods Are in the Mediterranean Diet? 

The Mediterranean diet is all about variety. Here are some key foods:

 

Fatty Fish: Salmon, mackerel, and sardines are rich in Omega-3 fatty acids, which keep your brain sharp.

 

Olive Oil: A staple for cooking and dressing salads, it's full of healthy fats.

 

Avocado: Great for heart health and a steady supply of nutrients to the brain.

 

Colorful Fruits and Veggies: Think blueberries, spinach, and bell peppers—they're loaded with antioxidants.

 

Nuts and Legumes: Almonds, walnuts, and beans are full of protein and vitamin E.

 

Whole Grains: Quinoa, brown rice, and oats provide steady energy.

 

A Little Wine: Red wine in moderation can be good for the heart and brain.

 

How to Create Your Brain-Healthy Menu?

Ready to give the Mediterranean diet a try? Here are some tips:

 

Start with What You Love: If you hate fish, try more nuts and olive oil. If you don't drink wine, load up on fruits and veggies.

 

Make Gradual Changes: Start small. Try eating fish twice a week or having a handful of nuts every day.

 

Experiment with Recipes: There are tons of Mediterranean recipes online. Greek salad, grilled salmon with quinoa—they're all delicious and brain-healthy.

 

Be Flexible: The diet isn't set in stone. Customize it to fit your taste and needs. The goal is to enjoy your meals while keeping your brain healthy.

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Mediterranean Diet Recipe List

Here are some easy and brain-healthy recipes to get you started:

1. Mediterranean Grilled Salmon

 

Ingredients:

Salmon fillets

Olive oil

Lemon juice

Minced garlic

Fresh rosemary or dried rosemary

Salt and pepper

 

Instructions:

Season the salmon with olive oil, lemon juice, garlic, rosemary, salt, and pepper.

Preheat the oven to 400°F (200°C) and bake for 12-15 minutes until cooked through.

Serve with roasted veggies like broccoli or bell peppers.

 

Why It's Brain-Healthy: Salmon is packed with Omega-3 fatty acids, and olive oil fights inflammation.

 

2. Greek Salad

 

Ingredients:

Fresh tomatoes

Cucumber

Thinly sliced red onion

Olives (optional)

Fresh basil or mint

Olive oil

Lemon juice

Sea salt and pepper

 

Instructions:

Toss all the veggies in a big bowl with olive oil, lemon juice, salt, and pepper.

Chill in the fridge for 15 minutes to let the flavors blend.

Garnish with fresh basil or mint before serving.

 

Why It's Brain-Healthy: Loaded with antioxidants and vitamins that fight free radicals and keep your brain young.

 

3. Quinoa Veggie Salad

 

Ingredients:

Cooked quinoa

Diced red and yellow bell peppers

Black beans (drained)

Corn kernels (fresh or frozen)

Olive oil

Balsamic vinegar

Salt and pepper

 

Instructions:

Combine quinoa, bell peppers, black beans, and corn in a large bowl.

Dress with olive oil, balsamic vinegar, salt, and pepper.

Add diced avocado for extra texture and nutrition.

 

Why It's Brain-Healthy: Quinoa provides steady energy, and the colorful veggies are full of antioxidants.

 

4. Nut and Dried Fruit Mix

 

Ingredients:

Almonds

Walnuts

Cashews

Raisins

Diced dates

 

Instructions:

Mix all the nuts and dried fruits in a large bowl.

Portion into small bags for a convenient and healthy snack.

 

Why It's Brain-Healthy: Nuts are rich in vitamin E and healthy fats that protect brain cells.

 

5. Mediterranean Roasted Chicken

 

Ingredients:

Chicken breast or thighs

Olive oil

Lemon juice

Minced garlic

Fresh rosemary or dried rosemary

Salt and pepper

 

Instructions:

Season the chicken with olive oil, lemon juice, garlic, rosemary, salt, and pepper.

Preheat the oven to 375°F (190°C) and roast for 30-40 minutes until cooked through.

Serve with roasted potatoes or quinoa.

 

Why It's Brain-Healthy: Olive oil and lemon juice are anti-inflammatory, and garlic is full of antioxidants.

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