Nutrition significantly influences mental well-being through its impact on brain health and function. Nutrient-rich foods, such as those high in omega-3 fatty acids, antioxidants, and vitamins, can improve cognitive function and mood regulation. Diets high in processed foods and sugars have been linked to increased rates of depression and anxiety. Regular intake of whole, nutrient-dense foods, such as fruits, vegetables, and whole grains, supports brain health, stabilizes energy levels, and reduces mood swings, leading to a more positive overall mental state.