Macronutrients: Carbohydrates, Proteins, Fats
Start with the big picture
The lesson compares macronutrients by energy yield and recommended contribution to the diet, then connects those nutrients to physiological needs. Carbohydrates support glucose-dependent tissues, while fiber has roles in laxation and LDL reduction; carbohydrate type is considered alongside glycemic index. Proteins supply essential amino acids for tissue synthesis, and their adequacy is explored through nitrogen balance, protein quality, and forms of protein-energy malnutrition. Fats contribute to energy storage and cell structures, transport fat-soluble vitamins, and provide essential fatty acids. The topic also distinguishes fat types and introduces metabolism and clinical considerations, including risks associated with excess intake.
What you'll learn
- Compare the energy contributions and dietary roles of carbohydrates, proteins, and fats.
- Describe glucose dependence and the functions of dietary fiber.
- Explain essential amino acids, nitrogen balance, and protein quality.
- Distinguish types of dietary fats and the roles of essential fatty acids.
- Identify nutritional concerns associated with inadequate or excessive macronutrient intake.
Continue your study
Work through the complete notes and reinforce the topic with the study tools available in the full lesson.
