The effects of a healthy diet on your brain health.
You probably already know that nutrition is important for your heart, your weight, or your blood sugar. But your diet is also one of the most powerful levers you can use for your brain.
Your brain is extremely energy-intensive: about 20 percent of your daily energy consumption goes to that one and a half kilogram of tissue in your skull. What you eat not only determines how much fuel is available, but also the quality of your blood vessels, your inflammation level, and even your gut flora.
The LIBRA score is not about superfoods or complicated diets, but about the overall pattern over the years:
Mostly plant-based: vegetables, fruits (especially berries), whole grains, nuts, seeds, and legumes
Healthy fats: mainly from olive oil, nuts, and fatty fish
Minimally ultra-processed: little soda, cookies, chips, ready-made meals, and processed meats
Limit red and processed meats
People who follow this pattern over a long period often show a slower decline in memory and cognitive abilities in research. Imaging studies also often find larger brain volumes in areas that are important for memory and planning.
You probably already know that nutrition is important for your heart, your weight, or your blood sugar. But your diet is also one of the most powerful levers you can pull for your brain.
Your brain is extremely energy-intensive: about 20 percent of your daily energy consumption goes to that one and a half kilograms of tissue in your skull. What you eat not only determines how much fuel is available, but also the quality of your blood vessels, your level of inflammation, and even your gut flora.
Large cohort studies show that a Mediterranean-like diet is associated with a lower risk of cognitive decline and dementia. Estimates range from about 10 to 30 percent risk reduction. Some studies even describe a delay in cognitive aging by several years.
The MIND diet also shows similar effects. This is a dietary pattern that was specifically developed with brain health in mind.
MIND stands for Mediterranean–DASH Intervention for Neurodegenerative Delay. It combines elements from two well-known healthy diets:
The Mediterranean diet, with plenty of vegetables, fish, olive oil, and legumes
The DASH diet (Dietary Approaches to Stop Hypertension), which was originally developed to lower high blood pressure
The MIND diet places extra emphasis on foods that are beneficial for the brain, such as leafy greens, berries, nuts, and fish, and recommends limiting processed foods, sugar, and red meat.
At the same time, we see globally that unhealthy diets actually contribute significantly to dementia risk. Think of too much salt, too few vegetables and fruits, a lot of red and processed meat, and a high intake of heavily processed foods.
Nutrition influences your brain through multiple, mutually reinforcing pathways.
1. Blood Vessels
The same diet that is good for your heart also protects the small blood vessels in your brain. Less atherosclerosis and better vascular function mean fewer silent strokes and less white matter damage, processes that are strongly associated with later cognitive decline.
2. Inflammation and Oxidative Stress
Chronic low-grade inflammation is increasingly seen as a significant driver of brain aging and dementia. A diet rich in vegetables, fruits, olive oil, and plant-based substances has anti-inflammatory effects and reduces damage from oxidative stress.
3. Sugar Metabolism and Insulin Resistance
Many fast carbohydrates and highly processed foods increase the risk of insulin resistance. Brain cells need insulin to function properly. Disruption of this system is linked to Alzheimer's-like processes and is sometimes even referred to as "type 3 diabetes."
4. Gut-Brain Axis
A high-fiber diet and fermented products like yogurt, kefir, and sauerkraut feed beneficial gut bacteria. Through the immune system and inflammation pathways, they also influence the brain. A healthier gut flora is associated with better cognitive function and lower inflammation levels.
Important to know: unhealthy diets rarely work in isolation. They exacerbate other risk factors such as obesity, diabetes, high blood pressure, and high cholesterol. Therefore, nutrition is seen as a significant lever in virtually all prevention models.
“A multivitamin compensates for a bad diet.”
The main benefits for the brain come from complete dietary patterns, not from individual pills. Supplements can sometimes be useful, but they do not replace a complete diet.
“Carbohydrates are bad for your brain.”
The issue is not carbohydrates per se, but the degree of processing. Whole grains are actually beneficial for vascular and brain health. Products high in sugar and heavily processed are unfavorable.
“Red meat is necessary for strength and concentration.”
Red meat provides protein and iron, but high intake is associated with more vascular disease and possibly a higher risk of dementia. One serving per week or less is sufficient for most people.
“A glass of wine a day is good for the brain.” Recent studies show that there is likely no truly safe level of alcohol for brain health. Drinking less or quitting is the most certain choice.
You don't need to have a perfect eating pattern. Every little improvement is a gain, even at a later age.
1. Start with vegetables and fruits
Guideline: 250 to 300 grams of vegetables per day, plus 1 to 2 servings of fruit
Practical:
Half a plate of vegetables at dinner
Vegetable soup or salad at lunch
Raw vegetables ready in the fridge as a snack
2. Smartly switch your fats
Use olive oil instead of butter
Unsalted nuts instead of cookies
Fatty fish twice a week or more legumes
3. Less processed, more real food
The shorter the ingredient list, the better
Limit soda, energy drinks, ready meals, and deli meats
4. Stabilize your blood sugar
Choose whole grains over white
Always combine carbohydrates with protein and fat
Avoid large sugar spikes
5. Make it achievable, not heroic
Choose one meal to improve
Tackle one regular snack moment
Work with a few simple, healthy dishes
If you have diabetes, severe cardiovascular disease, kidney problems, or unintentional weight loss, always discuss significant dietary changes with your doctor or dietitian. Healthy eating should never disrupt the balance of other health issues.
At Remind, we've gathered the 15 most important modifiable factors for you. You can view each one individually and read about ways to manage them:
Share this article
Frequently Asked Questions
How does Remind help me to recognize changes in my brain in a timely manner?
Is Remind the same as a medical examination or diagnosis?
How reliable are the tests used by Remind?
What happens to my data? Is someone listening or reading along?
What does my Remind Brain Age mean for me?
