Essential nutrients including B-complex vitamins, Vitamin D, minerals such as iron, iodine, and zinc, omega-3 fatty acids, and high-quality proteins serve as building blocks for brain structure, neurotransmitter regulation, and optimal neuronal signalling. Deficiencies in these critical nutrients may lead to measurably reduced IQ scores, compromised memory function, slower information processing speeds, and attention deficits that significantly impact educational outcomes.