"Nutritious" refers to foods that provide essential nutrients necessary for the body's growth, maintenance, and overall health. These nutrients include vitamins, minerals, proteins, carbohydrates, and fats. Consuming a nutritious diet helps support bodily functions, boosts the immune system, and reduces the risk of chronic diseases. Foods that are considered nutritious often include fruits, vegetables, whole grains, lean proteins, and healthy fats. For example, spinach is rich in iron and vitamins, while salmon provides omega-3 fatty acids. Incorporating a variety of these foods into daily meals can lead to better health and well-being.