What are phytochemicals commonly known as?

Phytochemicals are commonly referred to as phytonutrients because they are bioactive compounds found in plants that contribute to the color, flavor, and disease resistance of the plants. These compounds can have beneficial effects on human health, acting as antioxidants, anti-inflammatory agents, immune system enhancers, and more. The term phytonutrients emphasizes their origin from plants (phyto- means "plant" in Greek) and their nutritional benefits for humans.

While antioxidants are a category of phytochemicals that help combat oxidative stress in the body, not all phytochemicals act as antioxidants, which distinguishes the broader term phytonutrients. Essential oils, on the other hand, are concentrated plant extracts that may contain some phytochemicals, but they are fundamentally different in composition and function. Minerals, while essential nutrients, are inorganic substances and do not fall under the category of phytochemicals or phytonutrients. Thus, the term phytonutrients is the most encompassing and accurately describes the nature of phytochemicals.