Nutritional choices significantly affect cognitive health, as certain foods nourish the brain and promote optimal function. Diets rich in antioxidants, healthy fats, and vitamins—like the Mediterranean diet—are linked to reduced risks of cognitive decline and improved brain health. Omega-3 fatty acids, found in fish, play a crucial role in maintaining neuronal function and promoting learning and memory. Conversely, excessive sugars and processed foods can negatively impact cognitive abilities and mood. Thus, a balanced, nutrient-rich diet is essential for maintaining cognitive wellness throughout life.