Phytochemicals are bioactive compounds found in plant foods that offer various health benefits beyond essential nutrients. These compounds, such as flavonoids, carotenoids, and polyphenols, have antioxidant, anti-inflammatory, and immune-boosting properties. They can contribute to the prevention of chronic diseases, including cancer and heart disease. Consuming a diet rich in fruits, vegetables, whole grains, and legumes increases phytochemical intake, enhancing overall health and well-being by supporting cellular function and reducing oxidative stress.