We all know that what we eat affects our heart, waistline, and overall health. But what about our ability to think clearly, regulate our mood, and remember where we put our keys?
As researchers learn more about the relationship between diet, metabolism, inflammation and cognitive function, one thing is becoming increasingly clear: our eating habits are linked to the health of our brains.
We asked nutritional psychiatrist Dr Uma Naidoo, author of It’s your brain on food and the next The Mental Clarity Dietto explain which foods are worth limiting, what to eat instead, and how your diet and your brain are linked in unexpected ways.
What foods are particularly bad for the brain?
“Diets high in ultra-processed foods, added sugars, and certain types of unhealthy fats are a concern, especially when these foods routinely replace more nutrient-dense whole foods,” says Naidoo. Think sugary drinks, highly processed snacks, and many packaged baked goods. Eaten too frequently, these foods can contribute to metabolic dysfunction and inflammation, two very important processes for your noggin.
“These processes are important for brain health because the brain depends on a constant supply of energy, healthy blood vessels and a balanced inflammatory response to function optimally,” explains Naidoo. Research has also linked diets high in ultra-processed foods to mental health problems and difficulties with mental clarity.
Who is the biggest offender?
If there’s one category that needs more attention, says Naidoo, it’s sugary drinks. “If I had to favor one category, it would be these, especially when they are consumed frequently,” she continues. “Soda, sugary energy drinks, and other beverages high in added sugar can provide substantial amounts of sugar without providing much fiber or satiety, and regular consumption of these beverages may make it easier to exceed the recommended intake of added sugar and may contribute to metabolic problems that affect long-term brain health.”
Since drinks can be less filling than solid foods, it’s easy to consume a significant amount of added sugar without realizing it. The easiest place to start changing your habit? Keep water or unsweetened drinks on hand. If you regularly drink sugary soda or coffee, try replacing one serving per day with an unsweetened alternative.
When it comes to these foods, how often is too often?
It’s not like a single soda, cookie or bag of chips can damage your brain, says Naidoo. The type of damage she describes is the cumulative effect of a diet consistently high in added sugars and low in fiber, healthy fats, vitamins and minerals. “The quantity, frequency and overall quality of a person’s diet all matter,” says Naidoo. “The concern is more about habitual consumption and what happens when ultra-processed foods become a significant part of the diet. »
Over time, this tendency can contribute to problems with blood sugar regulation, cardiovascular health, and inflammation, all of which are linked to brain health. “Supporting brain health should be about developing lasting habits, not creating anxiety or guilt around eating,” says Naidoo. In other words, a brain-friendly diet doesn’t have to be perfect, and you shouldn’t feel guilty for enjoying the foods you love.
How do inflammation and blood sugar regulation affect the brain?
“Inflammation can affect immune cells in the brain and influence processes involved in mood regulation, learning and memory,” says Naidoo. “And frequent consumption of large amounts of added sugars, especially in the context of an overall poor-quality diet, may contribute to insulin resistance and impaired glucose regulation.”
Since the brain relies heavily on glucose for energy, this type of metabolic dysfunction can have a significant impact on cognitive function and long-term brain health. Research has linked metabolic problems to decreased mental clarity and increased risk of cognitive decline. However, scientists are still working to understand the precise relationships between diet and brain health, and an association does not necessarily prove that a particular food directly causes cognitive decline.
Is there a link between the gut and the brain?
In short, yes. According to Naidoo, one of the most fascinating things about nutrition and brain health is that the relationship works both ways. “It’s a two-way conversation,” she explains. “What we eat influences our brain function, but our brain also influences our appetite, cravings, food preferences and eating behaviors.”
The gut microbiome – the community of microorganisms living in your digestive tract – is part of this conversation. Gut microbes produce compounds that can communicate with the brain through immune, metabolic, hormonal, and neuronal pathways. Foods rich in fiber, including vegetables, legumes, nuts, seeds and whole grains, help support beneficial gut microbes.
Nutrition also helps provide the building blocks that your brain uses to make neurotransmitters, the chemical messengers involved in communication between nerve cells. “Tryptophan, for example, is an amino acid used to produce serotonin, while nutrients such as folate, vitamin B12 and vitamin B6 support various processes involved in neurotransmitter metabolism,” explains Naidoo.
What should Are you eating to support brain health?
Instead of focusing exclusively on what to eliminate, try thinking about what you can add to your plate. Increasing your intake of nutrient-dense, minimally processed foods is a great place to start.
“I encourage people to focus on adding protective, nutrient-dense whole foods rather than just eliminating foods they enjoy,” says Naidoo. “Adding more foods like non-starchy vegetables is easy to do and may feel more satisfying than eliminating foods.”
Here are seven additions to incorporate into your menu:
Leafy vegetables: “Spinach, kale and other leafy vegetables provide folate and carotenoids that support normal brain function,” says Naidoo. Add a handful of greens to your eggs, blend them into a smoothie, or use them as a base for a salad.
Fish rich in omega-3: “Salmon, sardines and other fatty fish provide EPA and DHA, fatty acids important for brain cell membranes and neuronal function,” explains Naidoo. If you don’t eat fish, try walnuts, chia seeds and flax seeds, which provide plant-based omega-3 fatty acids.
Berries: “Blueberries, strawberries and other berries provide polyphenols and other compounds studied for their potential neuroprotective effects,” says Naidoo. Try them for breakfast, as a snack or even dessert.
Nuts and seeds: Walnuts, chia seeds, and flax seeds provide healthy fats and other nutrients that support overall metabolic and cardiovascular health. Sprinkle them over oatmeal or yogurt, or keep a handful nearby for an easy snack.
Beans and lentils: “These provide fiber, folate and minerals, while promoting healthy blood sugar regulation,” explains Naidoo. Add beans to soups and salads, or make lentils the base of a weeknight meal.
extra virgin olive oil: An essential part of the Mediterranean diet, extra virgin olive oil provides monounsaturated fats and polyphenols. Use it in salad dressings or drizzle it over vegetables before roasting.
The bigger picture also matters. As Naidoo points out, “regular physical activity, restful sleep, stress management, social connections, and management of cardiovascular risk factors all play an important role in brain health.”
In other words, you don’t have to give up all the treats you enjoy to take care of your brain. You just need to make room for more foods that help it thrive.
The article Do you want to keep your brain healthy? Here are the foods to avoid appeared first on Katie Couric Media.
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