The Most Forgotten Childhood Foods That Supercharge IQ

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The Purple Power of Blueberries – Memory’s Best Friend

The Purple Power of Blueberries - Memory's Best Friend (image credits: pixabay)
The Purple Power of Blueberries – Memory’s Best Friend (image credits: pixabay)

You probably remember reaching for blueberries on top of your cereal or mixed into pancakes, but did you know these tiny purple gems were quietly boosting your brainpower? A study done by researchers at Harvard’s Brigham and Women’s Hospital found that women who consumed two or more servings of strawberries and blueberries each week delayed memory decline by up to two-and-a-half years. Blueberries are bursting with antioxidants, specifically flavonoids. These antioxidants stimulate the flow of blood and oxygen in the brain, resulting in boosted concentration. What makes this even more fascinating is that some of the antioxidants in blueberries have been found to accumulate in the brain and help improve communication between brain cells. It’s like having tiny messengers making sure all parts of your brain stay connected and sharp. In one study, children who consumed a berry-rich smoothie performed better on memory and attention tests. Another study found that regular consumption of blueberries improved memory and cognitive function in children.

Sweet Potatoes – The Forgotten Brain Builder

Sweet Potatoes - The Forgotten Brain Builder (image credits: pixabay)
Sweet Potatoes – The Forgotten Brain Builder (image credits: pixabay)

Tomatoes, sweet potatoes, pumpkin, carrots, spinach — vegetables with rich, deep color are the best sources of antioxidants that keep brain cells strong and healthy. Sweet potatoes were probably a staple at your family dinner table, maybe even disguised as “candied yams” during holidays. But these orange powerhouses deserve way more credit than they get for brain development. The vibrant orange color comes from beta-carotene, which your body converts to vitamin A – essential for proper brain function. Think of sweet potatoes as nature’s slow-release energy system for your brain, providing steady glucose without the sugar crashes that come from processed foods. At age eight years, higher adherence to a ‘Whole grains, soft fats and dairy’ pattern was associated with a larger total brain and larger cerebral gray matter volumes at age 10. Children with higher diet quality and better adherence to a ‘Whole grains, soft fats and dairy’ dietary pattern at age eight showed greater brain gyrification and larger surface area, clustered primarily in the dorsolateral prefrontal cortex. The complex carbohydrates in sweet potatoes fuel your brain all day long, unlike the quick sugar spikes from candy.

Eggs – The Choline Champions Your Parents Always Pushed

Eggs - The Choline Champions Your Parents Always Pushed (image credits: flickr)
Eggs – The Choline Champions Your Parents Always Pushed (image credits: flickr)

Remember when your mom insisted you eat your eggs for breakfast? She was actually giving you one of the most powerful brain foods on the planet. Eggs are well-known as a great protein source — but the egg yolks are also packed with choline, which helps memory development. Choline is an essential micronutrient your body uses to create acetylcholine, a neurotransmitter that helps regulate mood and memory. What’s really amazing is that two whole eggs a day provide the choline that children age 8 and younger need. As far as brain health goes, egg yolks are a good source of choline, which is associated with reducing inflammation and promoting brain function, like maintaining memory and communications between brain cells. So all those times you tried to skip the yolk, you were actually tossing out the most brain-boosting part! Eggs, especially the yolks, contain large amounts of choline, which helps in fetal brain development for pregnant women. Choline also is a nutrient essential for the production of acetylcholine, a neurotransmitter involved in memory and learning.

Walnuts – The Brain-Shaped Miracle Food

Walnuts - The Brain-Shaped Miracle Food (image credits: pixabay)
Walnuts – The Brain-Shaped Miracle Food (image credits: pixabay)

Isn’t it funny how walnuts actually look like tiny brains? Nature might have been giving us a hint all along. A study from UCLA linked higher walnut consumption to improved cognitive test scores. A study from UCLA linked higher walnut consumption to improved cognitive test scores. Studies have shown that walnut consumption is associated with better memory, faster processing speed, and even higher IQ scores. Studies have shown that walnut consumption is associated with better memory, faster processing speed, and even higher IQ scores. Many nuts are helpful for brain health, but walnuts are the only tree nut that are an excellent source of alpha-linolenic acid (ALA), a plant-based omega-3 fatty acid that’s converted to the omega-3s DHA and EPA within the body. The nuts have been linked to improved cognitive performance in adults. What makes walnuts so special compared to other nuts is their unique omega-3 profile. Walnuts are high in a type of omega-3 fatty acid called alpha-linolenic acid (ALA). Think of ALA as premium fuel for your brain’s engine – it keeps everything running smoothly and efficiently.

Spinach – Popeye’s Secret to Smart Muscles

Spinach - Popeye's Secret to Smart Muscles (image credits: pixabay)
Spinach – Popeye’s Secret to Smart Muscles (image credits: pixabay)

Popeye was onto something way bigger than just strong muscles when he chugged that spinach. It turns out that Popeye was on to something with his spinach obsession. Getting regular helpings of leafy green brain foods — like kale, Swiss chard and romaine lettuce — can help keep dementia at bay, according to research. In one study, which evaluated the eating habits and mental ability of more than 950 older adults for an average of five years, adults who ate a serving of leafy green veggies once or twice a day experienced slower mental deterioration than those who ate no vegetables, even when factors like age, education and family history of dementia were factored in. What’s even more incredible is that a long-term study from Rush University found that people who ate at least one serving of leafy greens a day had brains that functioned as if they were 11 years younger than those who didn’t. Leafy greens are high in brain-healthy nutrients, including vitamin K, lutein, folate and beta-carotene. There’s a reason that parents try to hide extra leafy greens, such as spinach and kale, in their children’s smoothies and pasta sauce: They’re a great source of iron and folate. Imagine telling your 8-year-old self that eating spinach could literally make your brain work like it’s 11 years younger!

Dark Chocolate – The Sweet Brain Booster

Dark Chocolate - The Sweet Brain Booster (image credits: pixabay)
Dark Chocolate – The Sweet Brain Booster (image credits: pixabay)

This might be the most exciting news you’ll read today: dark chocolate is actually brain food! However, a 2018 study in humans also supports the brain-boosting effects of dark chocolate. The researchers used imaging methods to look at activity in the brain after participants ate chocolate with at least 70 percent cacao. The researchers concluded that eating this type of dark chocolate may improve brain plasticity, which is crucial for learning, and may also provide other brain-related benefits. Great news for dark chocolate lovers: Research suggests it has brain-boosting powers, including enhanced cognitive function, reduced risk of dementia, and improved performance on memory activities. For example, a 2018 review in the journal Nutrients found that more than 50 mg epicatechin/day, a flavanol found in cocoa, tea, berries, and other fruits, yields cognitive benefits—especially in tasks involving memory, executive function, and processing speed in older adults (>50 years old) who took epicatechin for a duration of 28 days or longer. The key is choosing dark chocolate with at least 70% cacao content – basically, the darker and more bitter, the better for your brain. Cocoa is rich in flavonoids, caffeine, and theobromine, all compounds that enhance brain function. Flavonoids in particular are known to improve blood flow to the brain, reduce inflammation, and stimulate neurogenesis—the birth of new neurons. So next time someone gives you grief about eating chocolate, you can tell them you’re literally growing new brain cells!

Avocados – The Creamy Concentration Enhancer

Avocados - The Creamy Concentration Enhancer (image credits: flickr)
Avocados – The Creamy Concentration Enhancer (image credits: flickr)

Before avocado toast became an Instagram sensation, this green fruit was quietly working its magic on developing brains. Thus, by reducing high blood pressure, the unsaturated fats in avocados may lower the risk of cognitive decline. Avocados are rich in monounsaturated fats, the same heart-healthy fats found in olive oil. These fats improve blood flow, including to the brain, and support the integrity of brain cell membranes. Think of avocados as brain maintenance food – they keep your neural highways smooth and traffic flowing efficiently. What’s fascinating is that your brain is about 60% fat, so feeding it high-quality fats like those found in avocados is like giving your car premium gasoline instead of regular. The creamy texture that kids love is actually a sign of all those beneficial monounsaturated fats that help with focus and concentration. Plus, unlike many brain foods that kids resist, most children actually enjoy the mild taste and smooth texture of avocados.

Oatmeal – The Steady Brain Fuel

Oatmeal - The Steady Brain Fuel (image credits: pixabay)
Oatmeal – The Steady Brain Fuel (image credits: pixabay)

Your brain runs on glucose, and complex carbohydrates found in whole grains provide a slow and steady release of this essential fuel. Unlike refined sugars that cause crashes, whole grains offer sustained energy, keeping you focused and alert throughout the day. Oats, quinoa, brown rice, barley, bulgur, and whole wheat are all excellent choices. They also contain B vitamins, which help regulate neurotransmitters and support brain function. Breakfasts with whole grains—like oatmeal or whole-grain toast—set the stage for better concentration and memory all day long. Remember those mornings when your parents insisted on oatmeal instead of sugary cereal? They were setting you up for academic success without you even knowing it. The brain needs a constant supply of glucose — and whole grains provide that in spades. Oatmeal is like a time-release capsule for your brain – it delivers steady energy for hours instead of the quick spike and crash you get from processed breakfast foods. The fiber in oats also helps stabilize blood sugar, which keeps your mood and concentration steady too.

Lentils – The Protein-Packed Brain Builder

Lentils - The Protein-Packed Brain Builder (image credits: pixabay)
Lentils – The Protein-Packed Brain Builder (image credits: pixabay)

Make lentils a staple in your soups and salads, and your brain will thank you for it. Lentils are packed with folate, a B vitamin shown to help boost cognitive performance. The vitamin can also play a role in decreasing levels of the amino acid homocysteine. Beans are humble heroes when it comes to brain health. Lentils, chickpeas, black beans, and kidney beans provide complex carbohydrates, protein, fiber, and essential B vitamins. These nutrients work together to stabilize blood sugar, fuel your brain steadily, and promote healthy neurotransmitter production. Folate, in particular, is critical for cognitive development and repair. Most kids probably remember lentils from those hearty winter soups that seemed to magically appear on cold days. What they didn’t know was that each spoonful was delivering a powerful combination of brain-building nutrients. Adequate levels of folate are essential for brain function, and folate deficiency can lead to neurological disorders, such as depression and cognitive impairment. Folate supplementation either by itself or in conjunction with other B vitamins has been shown to be effective at preventing cognitive decline and dementia during aging, and at potentiating the effects of antidepressants. Lentils are like tiny nutritional powerhouses that work behind the scenes to keep your brain chemistry balanced and functioning optimally.

Peanut Butter – The Unexpected IQ Booster

Peanut Butter - The Unexpected IQ Booster (image credits: unsplash)
Peanut Butter – The Unexpected IQ Booster (image credits: unsplash)

Peanuts and peanut butter are a good source of vitamin E, a potent antioxidant that protects nervous membranes — plus thiamin to help the brain and nervous system use glucose for energy. Peanuts are a legume with an excellent nutritional profile. They contain plenty of unsaturated fats and protein to keep a person’s energy levels up throughout the day. Peanuts also provide key vitamins and minerals to keep the brain healthy, including high levels of vitamin E and resveratrol. That beloved PB&J sandwich you probably ate countless times as a kid? It was actually delivering serious brain benefits. Peanut butter provides sustained energy that helps maintain focus during long school days, unlike sugary snacks that cause energy crashes. Resveratrol is a natural non-flavonoid antioxidant found in peanuts, mulberries, and rhubarb. Evidence from a review article suggests that resveratrol can have protective effects, such as helping to prevent cancers, inflammation, and neurological diseases, including Alzheimer’s and Parkinson’s. The combination of healthy fats, protein, and vitamin E in peanut butter creates a perfect storm of brain protection and enhancement.

The Hidden Connection Between Early Nutrition and Lifelong Intelligence

The Hidden Connection Between Early Nutrition and Lifelong Intelligence (image credits: unsplash)
The Hidden Connection Between Early Nutrition and Lifelong Intelligence (image credits: unsplash)

Here’s where the science gets really mind-blowing: Eradication of the three most prevalent micronutrient deficiencies—iron, zinc, and iodine–could increase the world IQ by 10 points. TTC data revealed that a higher IQ was associated in boys with increased protein intake and in girls, with reduced carbohydrate intake. These observed differences in brain morphology mediated associations between dietary patterns and IQ. In conclusion, dietary patterns in early- and mid-childhood are associated with differences in brain morphology which may explain the relation between dietary patterns and neurodevelopment in children. The foods you ate as a child didn’t just affect how you felt that day – they literally shaped the structure of your brain. At age eight years, higher adherence to a ‘Whole grains, soft fats and dairy’ pattern was associated with a larger total brain and larger cerebral gray matter volumes at age 10. Children with higher diet quality and better adherence to a ‘Whole grains, soft fats and dairy’ dietary pattern at age eight showed greater brain gyrification and larger surface area, clustered primarily in the dorsolateral prefrontal cortex. This means the difference between eating processed junk food and these forgotten brain foods could literally determine how smart you become. It’s like the ultimate investment in your future self – except instead of money in a bank account, you’re depositing nutrients in your brain bank.

Who would have thought that the very foods our parents had to bribe us to eat were actually the secret ingredients to unlocking our mental potential?

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