Dietary changes that can lead to improved heart health include increasing the intake of fruits, vegetables, whole grains, and healthy fats while reducing saturated fats, trans fats, and sodium. Emphasizing fiber-rich foods can help lower cholesterol levels, while adding sources of omega-3 fatty acids supports overall cardiovascular function. Maintaining proper hydration and limiting added sugars can also contribute positively to heart health, fostering a balanced diet for better overall well-being.