This chapter introduces the basic concepts of nutrition including the six major nutrients, essential nutrients, phytochemicals, and dietary supplements. It defines key terms like calories, macro and micronutrients, empty calories, and nutrient-dense foods. The chapter establishes that the scientific study of nutrition examines how the body uses nutrients from food to carry out metabolic processes at the cellular level for energy, growth, and regulation of bodily functions.

1. Nutrition for Healthy Living Second Edition Chapter 1 The Basics of Nutrition