8 vitamin and mineral deficiencies that can lower IQ level

Intelligence or IQ has been shown to be affected by genes, the environment, and diet. Though learning and cognitive challenge contribute considerably to intellectual growth , nutrition also has a fundamental contribution. Brain activity, memory, and intelligence generally depend on minerals and vitamins. Lack of these nutrients during early childhood stages tends to hamper intellectual growth, reduce the IQ level, and predispose the individual to neurologic disease.

Iodine is a critical mineral required for the production of thyroid hormones, which regulate brain development and metabolism. According to studies, iodine deficiency during pregnancy and early childhood can lead to lower IQ levels by up to 15 points. Severe iodine deficiency causes cretinism, a condition marked by mental retardation and stunted growth. Iodine is naturally found in seafood, dairy products, eggs, and iodized salt. Ensuring adequate iodine intake, especially for pregnant women and young children, is crucial for optimal brain function.

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Iron plays an essential role in transporting oxygen and facilitating energy metabolism in the brain. Deficiency leads to anemia, tiredness, and low cognitive abilities. Iron deficiency during infancy and childhood has been related to limited concentration ability, low average memory capacity, and IQ. Foods containing iron are red meat, spinach, lentils, cereals with iron supplementations, and nuts. Absorption of iron from food becomes enhanced with a diet that is high in vitamin C such as orange and tomato.

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Vitamin B12 is necessary for brain development, nerve function, and DNA synthesis. Lack of this vitamin leads to neurological complications, loss of memory, and mental deterioration. Research indicates that children with low B12 levels do poorly in problem-solving exercises and have lower IQ scores. Vitamin B12 is primarily found in animal-based foods such as meat, fish, eggs, and dairy. Vegetarians and vegans may require supplementation to meet their daily needs.

Zinc is a critical mineral that aids brain function, neurotransmitter function, and synaptic plasticity. Learning problems, impaired memory, and decreased cognitive performance are associated with zinc deficiency. Low zinc status in children usually results in delayed development and decreased IQ. Foods rich in zinc include meat, shellfish, dairy products, nuts, and whole grains.

Omega-3 fatty acids, especially DHA (docosahexaenoic acid), play an important role in brain function and development. It has been seen that insufficient consumption of omega-3 during pregnancy and early life may result in reduced IQ scores, memory impairments, and behavioral problems. Omega-3s are found in fatty fish, flaxseeds, walnuts, and chia seeds. Supplementing with fish oil can help improve cognitive performance.

Vitamin D is important in the development of the brain, mood stabilization, and cognitive ability. Vitamin D deficiency causes impaired memory, depression, and decreased IQ scores. Research indicates that low levels of vitamin D in children and adults result in poor performance on cognitive tasks. Natural sources of vitamin D include sunlight exposure, fortified dairy products, eggs, and fatty fish.

Magnesium plays a role in the function of the nerves, learning, and memory. Low magnesium may cause inadequate concentration, tension, and weakening of cognitive functioning. A study indicates that learning and low IQ are problematic among children suffering from magnesium deficiency. Magnesium-containing foods include seeds, nuts, whole cereals, dark chocolate, and greens.

Choline is a less prominent but very essential nutrient for the health of the brain, especially in fetal life. Choline is involved in memory, learning, and brain function. Deficiency in choline during pregnancy has been associated with decreased levels of IQ among children, as research suggests. Eggs, meat, fish, milk, and some vegetables such as broccoli contain choline.