Fat plays a vital role in a healthy diet. It serves as a major energy source, aids in the absorption of fat-soluble vitamins (A, D, E, and K), and supports cellular function. Healthy fats, such as those from fish, nuts, and avocados, can reduce inflammation and promote heart health. While dietary fat is essential, balance is key; excessive consumption of unhealthy fats can lead to health issues like cardiovascular disease. Moderation and choosing healthy sources are crucial for maintaining overall well-being.