3 Essential Categories of Foods for ADHD Diet

Attention deficit hyperactivity disorder (ADHD) is a common neurodevelopmental disorder that affects millions of children and adults worldwide. People with ADHD may experience difficulties with attention, impulsivity, hyperactivity, and executive functioning, which can interfere with their daily life, academic performance, and social relationships. While medication and behavioral therapy are the main treatments for ADHD, some research suggests that dietary changes may also help improve some symptoms and support brain health.

In this article, you will learn about:

What is ADHD?
Three Essential Types of Foods for ADHD
- Protein-Rich Foods for ADHD
- Omega-3 Fatty Fish for ADHD
- Whole Grain and Other Complex Carbohydrates for ADHD
Foods to Avoid or Limit for ADHD

What is ADHD?
Three Essential Types of Foods for ADHD

Protein-Rich Foods for ADHD
Omega-3 Fatty Fish for ADHD
Whole Grain and Other Complex Carbohydrates for ADHD

Foods to Avoid or Limit for ADHD
Frequently Asked Questions
Reference

What is ADHD?

ADHD is a neurodevelopmental disorder that affects about 5% of children and 2.5% of adults worldwide. It is characterized by a persistent pattern of inattention, hyperactivity, and impulsivity that interferes with functioning or development in two or more settings, such as home, school, work, or social situations. ADHD can also impair executive functions, such as planning, organizing, prioritizing, working memory, and self-regulation.

The exact causes of ADHD are not fully understood, but some factors that may contribute to its development include genetics, environmental exposures, brain structure and function, and prenatal and perinatal complications. ADHD is diagnosed using standardized criteria based on behavioral observations, clinical interviews, rating scales, and neuropsychological tests. The diagnosis of ADHD can be challenging, as some symptoms may overlap with other conditions, such as anxiety, depression, learning disabilities, or autism spectrum disorder.

The treatment of ADHD usually involves a combination of medication, psychotherapy, behavioral interventions, and educational support. Medication, such as stimulants or non-stimulants, can help reduce the core symptoms of ADHD by enhancing the activity of certain neurotransmitters, such as dopamine and norepinephrine, in the brain. Psychotherapy, such as cognitive-behavioral therapy (CBT), can help people with ADHD cope with their emotions, improve their self-esteem, and develop strategies to manage their symptoms and challenges. Behavioral interventions, such as positive reinforcement, contingency management, and parent training, can help modify the behavior of children and adults with ADHD by rewarding desirable actions and discouraging undesirable ones. Educational support, such as individualized education plans (IEPs), accommodations, and tutoring, can help students with ADHD achieve their academic goals and overcome their learning difficulties.

Three Essential Types of Foods for ADHD

ADHD symptoms may be influenced by various factors, including genetics, environment, and nutrition. Some nutrients are especially important for brain health and function, such as omega-3 fatty acids, vitamin D, zinc, iron, and magnesium. These nutrients can help reduce oxidative stress, support neurotransmitter production, and regulate mood and attention. The following three categories of foods are rich in these essential nutrients and may benefit people with ADHD:

Protein-Rich Foods for ADHD

Protein is a vital component of a balanced diet, as it provides the building blocks for many body tissues, including the brain. Protein also helps regulate blood sugar levels, which can affect energy and concentration. Protein-rich foods contain amino acids, iron, zinc, and copper, which are involved in the synthesis and function of neurotransmitters, such as dopamine and norepinephrine. These brain chemicals are responsible for motivation, focus, and impulse control, and they are often dysregulated in people with ADHD.

Several studies have found that low levels of zinc and iron are associated with more severe ADHD symptoms, such as inattention, hyperactivity, and impulsivity. Zinc and iron supplementation may improve these symptoms, especially in children with ADHD who have deficiencies in these minerals. However, it is important to consult a doctor before taking any supplements, as excessive intake of zinc and iron can have adverse effects.

Some examples of protein-rich foods that are also high in zinc and iron are:

Seafood: Oysters, clams, mussels, crab, shrimp, salmon, tuna, sardines, and anchovies are excellent sources of protein, zinc, and iron. They also provide omega-3 fatty acids, which are discussed in the next section.
Meat and poultry: Beef, lamb, pork, chicken, turkey, and liver are rich in protein, zinc, and iron. However, they also contain saturated fat and cholesterol, which may increase the risk of cardiovascular disease. Therefore, it is advisable to choose lean cuts, remove visible fat, and limit portion sizes.
Dairy products: Milk, cheese, yogurt, and kefir are good sources of protein, zinc, and calcium. They also contain vitamin B12, which is essential for nerve function and red blood cell production. Some dairy products are fortified with vitamin D, which is another important nutrient for brain health.
Nuts and seeds: Almonds, cashews, pistachios, walnuts, sunflower seeds, pumpkin seeds, and chia seeds are high in protein, zinc, and healthy fats. They also provide fiber, antioxidants, and phytochemicals, which may have anti-inflammatory and neuroprotective effects.

Omega-3 Fatty Fish for ADHD

Omega-3 fatty acids are essential fats that the body cannot produce on its own and must obtain from food. They play a crucial role in maintaining the structure and function of the brain and nervous system. Omega-3 fatty acids are composed of three main types: alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). ALA is found in plant sources, such as flaxseeds, chia seeds, and walnuts, while EPA and DHA are found in animal sources, especially fatty fish.

EPA and DHA are particularly important for brain health, as they are involved in the formation and repair of cell membranes, the modulation of inflammation, and the regulation of gene expression. They also affect the activity and availability of neurotransmitters, such as dopamine and serotonin, which are involved in mood, attention, and behavior.

Several studies have shown that children and adults with ADHD tend to have lower levels of omega-3 fatty acids, especially EPA, in their blood and brain tissue, compared to those without ADHD . Moreover, supplementing with omega-3 fatty acids, especially EPA, may improve attention, memory, learning, and behavior in children and adults with ADHD, especially those with low baseline levels of omega-3s .

The American Heart Association recommends eating at least two servings of fatty fish per week, as they are the best dietary sources of EPA and DHA. Some examples of fatty fish that are high in omega-3s are:

Salmon: Salmon is one of the most popular and nutritious types of fish, as it provides high-quality protein, vitamin D, selenium, and B vitamins, in addition to omega-3s. Wild-caught salmon may have higher levels of omega-3s and lower levels of contaminants than farmed salmon.
Tuna: Tuna is another widely consumed type of fish, as it is versatile, affordable, and convenient. It is also rich in protein, selenium, and B vitamins, as well as omega-3s. However, some types of tuna, such as albacore and yellowfin, may contain high levels of mercury, which can be harmful to the brain and nervous system. Therefore, it is advisable to limit the intake of these types of tuna to no more than six ounces per week, and choose light tuna or skipjack tuna, which have lower mercury levels.
Sardines: Sardines are small, oily fish that are often sold canned or fresh. They are an excellent source of omega-3s, protein, calcium, vitamin D, and vitamin B12. They also have low levels of mercury and other contaminants, as they are at the bottom of the food chain.
Anchovies: Anchovies are another type of small, oily fish that are usually sold canned, dried, or fermented. They are high in omega-3s, protein, calcium, iron, and niacin. They also have a strong flavor and can be used to enhance the taste of salads, pizzas, pastas, and sauces.

Whole Grain and Other Complex Carbohydrates for ADHD

Adjusting starch sources in the diet may help alleviate ADHD symptoms. Reducing refined sugars (found in cakes, desserts, and sugary drinks) and replacing refined starches (such as white rice and white bread) with whole grains like quinoa, brown rice, pumpkin, sweet potatoes, or corn can increase the intake of minerals like magnesium, zinc, and vitamin B6, which are essential for brain function and neurotransmitter production. Whole grains and other complex carbohydrates also provide a steady supply of glucose to the brain, which can help regulate mood, attention, and energy levels.

Some examples of whole grain and complex carbohydrate foods for ADHD are:

Food	Serving Size	Benefits
Oatmeal	1 cup cooked	Rich in fiber, magnesium, and zinc; helps lower cholesterol and blood pressure; promotes satiety and reduces cravings
Quinoa	1/2 cup cooked	High in protein, iron, and folate; gluten-free; has a low glycemic index; supports brain and nervous system health
Brown rice	1/2 cup cooked	Contains manganese, selenium, and magnesium; helps stabilize blood sugar and insulin levels; supports digestion and bowel movements
Pumpkin	1/2 cup mashed	Provides beta-carotene, vitamin C, and potassium; boosts immunity and vision; has anti-inflammatory and antioxidant properties
Sweet potato	1 medium	Offers vitamin A, vitamin C, and manganese; enhances memory and cognitive function; protects against oxidative stress and inflammation
Corn	1/2 cup kernels	Provides fiber, vitamin B6, and thiamine; supports energy production and metabolism; helps prevent neural tube defects in pregnancy

Foods to Avoid or Limit for ADHD

Some foods may worsen ADHD symptoms by triggering inflammation, affecting blood sugar levels, or interfering with neurotransmitter balance. These foods include:

Artificial colors, flavors, and preservatives: These additives are often found in processed and packaged foods, such as candy, chips, cookies, soda, and fast food. They may increase hyperactivity, impulsivity, and irritability in some children and adults with ADHD . Some of the most common culprits are tartrazine (yellow #5), sunset yellow (yellow #6), carmoisine (red #3), and sodium benzoate.
Sugar and high-fructose corn syrup: These sweeteners are added to many foods and beverages, such as cakes, pies, ice cream, candy, chocolate, juice, and soda. They may cause spikes and crashes in blood sugar and insulin levels, which can affect mood, attention, and energy levels. They may also contribute to obesity, diabetes, and cardiovascular disease, which are more prevalent in people with ADHD.
Caffeine: This stimulant is found in coffee, tea, energy drinks, chocolate, and some medications. It may temporarily improve alertness, focus, and motivation, but it may also cause anxiety, insomnia, irritability, and withdrawal symptoms in some people with ADHD. Caffeine may also interact with ADHD medications, increasing their side effects or reducing their effectiveness.
Alcohol: This depressant is found in beer, wine, liquor, and some medications. It may temporarily reduce stress, anxiety, and inhibitions, but it may also impair judgment, memory, and coordination in some people with ADHD. Alcohol may also interact with ADHD medications, increasing their side effects or reducing their effectiveness. Alcohol may also worsen other mental health conditions, such as depression, bipolar disorder, and substance abuse, which are more common in people with ADHD.

Frequently Asked Questions

How does diet affect ADHD symptoms?

Diet can affect ADHD symptoms by influencing the production and function of neurotransmitters, such as dopamine, norepinephrine, and serotonin, which are involved in attention, motivation, mood, and impulse control. Diet can also affect the levels of inflammation, oxidative stress, and blood sugar in the body, which can affect brain function and behavior. A balanced diet that provides adequate amounts of protein, omega-3 fatty acids, complex carbohydrates, vitamins, minerals, and antioxidants can help support brain health and reduce ADHD symptoms. A diet that is high in processed foods, artificial additives, sugar, caffeine, and alcohol can worsen ADHD symptoms by disrupting neurotransmitter balance, increasing inflammation, and affecting blood sugar levels.

What are some common food triggers or allergens for ADHD?

Some common food triggers or allergens for ADHD are gluten, casein, soy, eggs, nuts, and shellfish. These foods can cause inflammation, immune reactions, or digestive issues in some people with ADHD, leading to increased ADHD symptoms. However, food triggers or allergens vary from person to person, and not everyone with ADHD is sensitive to these foods.

What are some tips for choosing whole grain and complex carbohydrate foods for ADHD?

Some tips for choosing whole grain and complex carbohydrate foods for ADHD are:

Read the nutrition labels and ingredients lists carefully. Look for foods that have whole grains as the first or second ingredient, and avoid foods that have refined flours, sugars, or syrups.
Choose foods that have a low glycemic index (GI) and a high fiber content. These foods can prevent blood sugar spikes and crashes, which can affect attention and mood. Some examples of low GI foods are oatmeal, quinoa, barley, and lentils.
Combine whole grains and complex carbohydrates with protein and healthy fats. This can slow down the digestion and absorption of carbohydrates, and provide a balanced mix of macronutrients for optimal brain function. Some examples of protein and healthy fat sources are eggs, cheese, nuts, seeds, and avocado.

Reference

Konofal, E., Lecendreux, M., Arnulf, I., & Mouren, M. C. (2004). Iron deficiency in children with attention-deficit/hyperactivity disorder. Archives of pediatrics & adolescent medicine, 158(12), 1113-1115.
Benton, D. (2002). Carbohydrate ingestion, blood glucose and mood. Neuroscience & Biobehavioral Reviews, 26(3), 293-308.
Smith, A. P., & Wilds, A. (2009). Effects of cereal bars for breakfast and mid-morning snacks on mood and memory. International journal of food sciences and nutrition, 60(sup4), 63-69.
Zeisel, S. H. (2017). Nutrition in pregnancy: the argument for including a source of choline. International journal of women’s health, 9, 391.

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