As we age, our odds for developing Alzheimer’s disease and other types of dementia increase. However, cognitive decline is not an inevitable part of aging. While there are several ways you can potentially reduce your risk for cognitive decline, research indicates dietary choices may be particularly effective.
The Role of Diet in Brain Health
The brain relies on nutrients to function optimally. Healthy fats, antioxidants, vitamins, and minerals play key roles in reducing inflammation, combating oxidative stress, and mitigating other dementia risk factors like diabetes, obesity, and heart disease. Although there is no specific food or nutrient that can keep your mind sharp indefinitely, studies have shown holistic eating habits like the Mediterranean-DASH Diet Intervention for Neurodegenerative Delay (MIND) diet can reduce cognitive decline with aging.
The MIND Diet
Created in 2015 by researchers from Rush University Medical Center, the MIND diet is a hybrid of the Mediterranean and Dietary Approaches to Stop Hypertension (DASH) diets. Even though the MIND diet has been around for some time, it is more relevant than ever as dementia is estimated to affect 78 million people by 2030. A recently published systematic review of 40 studies evaluating the MIND diet’s effectiveness confirmed it was consistently associated with improvements in cognitive function and lowered dementia risk.
The MIND diet focuses on nine food groups you should eat and five to limit. Generally, the diet recommends three servings of whole grains and vegetables daily; one to two servings of beans, poultry, and fish weekly; and snacking on nuts and berries. The diet also recommends cooking with olive oil and limiting your sodium intake.
Foods for Brain Health
Below are the staple food groups of the MIND diet, along with examples and recommended serving sizes.
- Leafy Greens (six or more servings weekly): Spinach, kale, and broccoli are packed with vitamin K, lutein, folate, and beta carotene, which support neurocognitive health.
- Other Vegetables (one or more servings daily): In addition to leafy greens, the MIND diet recommends eating at least one daily serving of nutrient-rich vegetables such as asparagus, beets, bell peppers, broccoli, cabbage, carrots, eggplant, okra, or squash. Ideally, it is best to choose non-starchy vegetables because they are a good source of fiber and nutrients without excess calories.
- Whole Grains (three or more servings daily): Brown rice, oats, quinoa, and farro are rich in brain-healthy B and E vitamins. They can also be a great source of fiber, which may help with digestion and blood sugar regulation.
- Berries (two or more servings weekly): Blueberries, raspberries, and strawberries are antioxidant powerhouses that can protect brain cells from oxidative stress. Like leafy greens, they are also a good source of phytochemicals (compounds produced by plants) which can support brain health and physical health.
- Nuts and Seeds (five servings weekly): Almonds, Brazil nuts, cashews, pecans, pistachios, walnuts, flaxseeds, and sunflower seeds are rich sources of vitamin E, B vitamins, and healthy fats, as well as minerals that are essential for senior health like magnesium, potassium and calcium.
- Beans (three or more servings weekly): Black beans, lentils, and chickpeas are excellent sources of B vitamins, protein, and fiber.
- Fish (one or more serving weekly) & Poultry (two or more servings weekly): Fatty fish such as salmon and lean poultry like chicken and turkey provide omega-3s and protein.
Foods to Limit or Avoid
The MIND diet also recommends limiting foods with excess saturated fat and sugar, such as:
- Butter and Margarine: Limit to less than one tablespoon daily. Opt for olive oil instead.
- Cheese: Consume less than one serving per week.
- Red Meat: Limit to no more than three servings weekly, including beef, pork, and lamb.
- Fried Food: Avoid all fried foods and saturated fats, consuming them less than once per week.
- Pastries and Sweets: Limit processed snacks and desserts to four servings per week.
Nourish Your Brain
Investing in your cognitive health through dietary changes can lead to significant benefits as you age. Start small by cutting back on foods discouraged by the MIND diet, then gradually increase your intake of recommended foods. These steps can help protect your brain and enhance your overall well-being. As always, consult with a healthcare provider or nutritionist to tailor these tips to your individual needs. Your brain will thank you!
