Dietary changes that can lead to improved heart health include increasing intake of fruits, vegetables, and whole grains while reducing saturated fats and processed sugars. Consuming sources of omega-3 fatty acids like fish and nuts can support cardiovascular health. Limiting sodium intake helps manage blood pressure. Additionally, adopting a Mediterranean-style diet, rich in healthy fats from olive oil and avocados, can reduce the risk of heart disease and promote overall cardiovascular wellness.