What type of substances are phytochemicals classified as?

Phytochemicals are classified as non-nutrients because they are naturally occurring compounds found in plants that contribute to the color, flavor, and disease resistance of the plants. While they are not essential nutrients like carbohydrates, proteins, fats, vitamins, or minerals that the body needs in large quantities to sustain life, phytochemicals play significant roles in health and well-being. They are known for their potential health benefits, including antioxidant, anti-inflammatory, and immune-boosting properties, which can help prevent chronic diseases, but they are not required by the body for basic physiological functions.

In dietary discussions, non-nutrients like phytochemicals often enhance the functionality of foods beyond just providing energy and building blocks for the body, illustrating the importance of a varied diet rich in fruits, vegetables, and whole grains.