Human Flourishing | Health and Fitness | Healthy Brain Diet

Healthy Brain Diet

BY: T. Franklin Murphy | June 14, 2021

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For a healthy brain, we need a healthy diet. Research has discovered a strong gut brain connection. What we eat matters.

Our brains are hungry. Although they represent only a small percentage of our overall weight (about two percent), our brains easily consume over twenty percent of daily calories. Our brains are central to most bodily functions, working behind the curtains of consciousness, prioritizing and budgeting energy for survival and growth. For proper functioning, the brain needs nutrients. When deprived of proper fuel, brain function is hampered. A better performing brain requires healthy consumption of nutrient rich foods.

Nutrition Matters

Brain development, function, and resilience is highly nutrient sensitive. Robin Karr-Morse and Meredith S. Wiley suggest that even when early nutritional deficiencies are corrected in young children, the early malnutrition leaves a lasting mark. The emotional deficits often impact social interactions that impact the child's social development. They explain that "malnourished children may have temperamental characteristics such as hyper-alertness and distractibility" (2015, location 1635).

Nutrition expert and researcher Dawn Arda explains, "Anxiety, depression and more recently dementia have been linked to inflammation in the brain, also known as neuroinflammation. Luckily, we can influence the levels of inflammation in the body by the foods we eat" (2021).

What we eat matters for wellness, and especially for brain functioning and health.

Key Definition:

Brain health is the ability to draw on the strengths of the brain to enhance overall wellness. A healthy brain manages incoming information, logically evaluates, judges circumstances, and draws upon analogies to understand novel and new experiences.

Gabor Maté, a Canadian Physician, adds that "three environmental conditions absolutely essential to optimal human brain development are nutrition, physical security, and consistent emotional nurturing" (2010, location 3374).

Brain nutrition isn't just for young developing brains. What we eat influences brain functions throughout our lives. While there are no magic pills, no absolutes, an overall, well-rounded healthy diet boosts immunity to brain diseases as we age, and lifts day to day functioning.

Guy Harrison, an award winning journalist, wrote in his wonderful book Think that "good brains start with good nutrition. Bad eating habits can be devastating to the human brain. A brain is helped or hindered by the quantity and quality of its fuel, and this is true for human being" (2013 location 2746).

Scientific Research:

"Current evidence supports the recognition that neurotransmitter balance, dietary and lifestyle habits, nutritional status, and metabolic mechanisms, which include inflammation, micobiota imbalance, oxidative stress, and impaired mitochondrial function, are important variables that affect brain function" (Ross, 2018).

Two Critical Areas Impacted by Nutrition

Eating healthy impacts brain health in two critical areas. First, optimal nutrition improves brain function in the present by providing sufficient energy and nutrients for daily demands.

Lisa Feldman Barrett, one of the leading researchers on brain science, explains, "your brain’s most important job is to control your body—to manage allostasis—by predicting energy needs before they arise so you can efficiently make worthwhile movements and survive" (2020, location 135). Our brain expends a lot of energy budgeting energy, managing and prioritizing daily energy expenditures.

"Eating certain foods (and avoiding others) has been shown to slow brain aging by 7.5 years, and lessen the chances of developing Alzheimer's disease."
Mayo Clinic

Second, a healthy brain diet helps prevent or delay age related brain diseases, such as Alzheimer's disease. The gut and metabolism has recently been a focal point of interest in age related diseases. The guts integral role in cognition has made it a key target for improving cognitive health as we age (Minihane, 2021).

For both a healthy brain now and a heathy brain later nutrition is essential.

"Nutritionists emphasize that the most important strategy is to follow a healthy dietary pattern that includes a lot of fruits, vegetables, legumes, and whole grains."
Harvard Health Publishing

Which Diets are Good for the Brain?

Evidence from current research suggests that antioxidant and nutrient rich dietary patterns help maintain cognitive health. Three notable diets have shown encouraging results, boosting brain health and resilience. These diets are: the Mediterranean diet, the DASH diet, and the MIND diet.

Mediterranean Diet

The Mediterranean diet is a plant based, antioxidant, and anti-inflammatory diet. The Mediterranean diet includes a high intake of fish, green leafy vegetables, legumes, fruits, cereals, and unsaturated fatty acids, primarily in the form of extra-virgin olive oil, limited dairy products, meat and saturated fatty acids and a moderate consumption of red wine with meals (Ross, 2018).

"Cook and eat fresh food, savor the taste, enjoy dining with family and friends. A Mediterranean regimen is more than just a diet. It’s a lifestyle, a way of living well."
Cleveland Clinic

DASH Diet

The DASH diet or the Dietary Approaches to Stop Hypertension also has been scientifically found to slow cognitive decline.

The main characteristics of a DASH diet is high consumption of fruits, vegetables, legumes, lean meats, fish, poultry, seeds and nuts, low or non-fat dairy. The DASH diet limits consumption of sweets, saturated fats, and sodium (Ross, 2018).

MIND Diet

The MIND diet is a hybrid of the Mediterranean and DASH diets. MIND diet also known as the Mediterranean-DASH Intervention for Neurodegenerative Delay diet shares foundational components of the DASH and Mediterranean diets.

The MIND diet emphasizes consumption of natural and plant based foods and limits animal and high saturated fat food types (Ross, 2018).

The MIND diet provides absolute levels of intake, with some allowances for less healthy food choices. The MIND diet suggest "less than one serving per week of unhealthy foods, except butter, in which case, less than one tablespoon a day of butter is permissible" (Volpe, 2018).

MIND Diet:

Consuming at least three servings of whole grains per day
Consuming a salad each day
Eating one other vegetable every other day
Drinking a glass of wine each day
Snacking on nuts almost every day
Eating beans every other day
Consuming poultry and berried at least twice a week
Eating fish at least once a week

Nutrition and Brain Health | Stella Lucia Volpe, Ph.D., R.D.

Foods designated as unhealthy in the MIND diet are:

Fried and Fast Food
Red Meat
Cheese
Pastries
Sweets

"A brain healthy diet can minimize inflammation and insulin resistance, as well as nourish brain cells (neurons) and connections (synapses)."
Pacific Brain Health Center

Individual Foods for Brain Health

Some prefer the structure of a diet plan, others prefer to personalize a diet utilizing the healthy components of particular diet, fitting healthy foods into their meal plans.

Either adherence to a structured plan of a personalized incorporation of healthy foods (and elimination or limiting of unhealthy foods) can contribute to brain health.

The best plan is the one that works for us individually. Something we can incorporate and continue throughout weeks, months and years.

Green-Leafy Vegetables

Spinach, kale, broccoli, collard greens and other leafy green vegetables are rich in nutrients. These dark green vegetables contain nutrients like vitamin K, lutein, folate, and beta carotene. Research suggests that these plant-based foods may help slow cognitive decline (Harvard Health Publishing 2021).

Fat-soluble vitamin K is essential for forming sphingolipids, a type of fat that’s densely packed into brain cells (Ferland, 2012).

"Greens are packed with nutrients linked to better brain health like folate, vitamin E, carotenoids and flavonoids. And one serving a day has been shown to slow brain aging."
Mayo Clinic

Fatty Fish

A 2017 study found that people with high levels of omega-3s had increased blood flow in the brain. The researchers also identified a connection between omega-3 levels and better cognition, or thinking abilities.

Fatty fish are an excellent source of omega 3s.

Examples of oily fish high in omega-3 are:

salmon
mackerel
tuna
herring
sardines

Adding fatty fish to the menu once or twice a week is a large step towards a healthy brain diet.

"People can also get omega-3s from soybeans, nuts, flaxseed, and other seeds."
Lana Burgess | Medical News Today

Berries

In a twenty-year longitude study following 16,000 older adults, researchers found that those who consumed the most blueberries and strawberries had the slowest rate of cognitive decline. The scientists credit the high level of flavonoids in berries for the cognitive benefits (Mayo Clinic, 2019).

Add berries to your smoothie, toss them in a salad, or eat them as a sweet snack.

Nuts and Seeds

A 2014 review found that nuts can improve cognition and prevent neurodegenerative diseases.

Peter Pribis and Barbara Shukitt-Hale wrote that "there is growing evidence that the synergy and interaction of all of the nutrients and other bioactive components in nuts and berries can have a beneficial effect on the brain and cognition" (2014).

Nuts contain several nutrients that contribute to the health of the brain. Nuts and seeds contain healthy fats, antioxidants and vitamin E.

Whole Grains

Whole grains are first harvested as a whole grain kernel consisting of layers of bran, germ and endosperm. Processing of grains strips the grain of these healthy layers.

These outer coverings contain healthy vitamins, minerals and fiber as well as carbohydrates, some protein and healthy unsaturated fats. When you have a choice, always opt for 100% whole grain over refined or enriched.

"Whole grains, such as oats, barley, and quinoa are rich in many of the B vitamins that work to reduce inflammation of the brain, potentially preserving your memory (Cleveland Clinic).

Other Foods Found to Improve Brain Health

Tea and Coffee
Red Wine
Dark Chocolate
Olive Oil
Eggs
Spices – such as turmeric, cinnamon and ginger

A healthy diet isn't a mystery. Most of the foods healthy for the brain are also healthy for the heart and gut. If eating healthy is a chore, and following a strict diet a nightmare, simply choose a few healthier choices to add and a few nasties to avoid. Over the days, months and years our bodies begin to thrive in the rich nutrients and our wellness flourishes. Make a few changes today.

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T. Franklin Murphy

Wellness. Writer. Researcher.
T. Franklin Murphy has a degree in psychology. He is dedicated to the science of wellness. In 2010, he began publishing his findings.