Nutrition study guide
This guide is designed to help you understand the core ideas that commonly appear in introductory college Nutrition courses. Read the explanation, follow the example, then try the practice questions without looking back. The goal is to understand the reasoning—not just memorize an answer.
Course requirements vary by school and instructor. Use this as a learning and review resource alongside your assigned textbook, lectures, and instructor guidance.
Macronutrients
Concept: Carbohydrates, fats, and proteins provide energy and structural materials in different amounts and roles.
Worked example: Carbohydrate and protein provide about 4 kcal/g; fat provides about 9 kcal/g.
Remember: Focus on the central relationship in macronutrients, define the important terms, and connect each step to the evidence, rule, formula, or process being used.
Common mistakes: Common mistakes include memorizing macronutrients without understanding when it applies, skipping units or definitions, and giving an answer without showing the reasoning that supports it.
Practice it
- Explain macronutrients in your own words.
- Use the lesson idea to create or solve one new nutrition example.
- What is one common mistake a student should avoid when working with macronutrients?
Micronutrients
Concept: Vitamins and minerals support metabolism, structure, fluid balance, and many enzyme systems.
Worked example: Iron is needed for hemoglobin, while calcium supports bone and muscle function.
Remember: Focus on the central relationship in micronutrients, define the important terms, and connect each step to the evidence, rule, formula, or process being used.
Common mistakes: Common mistakes include memorizing micronutrients without understanding when it applies, skipping units or definitions, and giving an answer without showing the reasoning that supports it.
Practice it
- Explain micronutrients in your own words.
- Use the lesson idea to create or solve one new nutrition example.
- What is one common mistake a student should avoid when working with micronutrients?
Digestion & absorption
Concept: Digestion breaks food into absorbable units; the small intestine is the major site of nutrient absorption.
Worked example: Most dietary fat is emulsified by bile and digested with pancreatic lipase.
Remember: Focus on the central relationship in digestion & absorption, define the important terms, and connect each step to the evidence, rule, formula, or process being used.
Common mistakes: Common mistakes include memorizing digestion & absorption without understanding when it applies, skipping units or definitions, and giving an answer without showing the reasoning that supports it.
Practice it
- Explain digestion & absorption in your own words.
- Use the lesson idea to create or solve one new nutrition example.
- What is one common mistake a student should avoid when working with digestion & absorption?
Energy balance
Concept: Body weight is influenced by energy intake, expenditure, metabolism, and other physiological factors.
Worked example: Energy expenditure includes basal metabolism, activity, and thermic effect of food.
Remember: Focus on the central relationship in energy balance, define the important terms, and connect each step to the evidence, rule, formula, or process being used.
Common mistakes: Common mistakes include memorizing energy balance without understanding when it applies, skipping units or definitions, and giving an answer without showing the reasoning that supports it.
Practice it
- Explain energy balance in your own words.
- Use the lesson idea to create or solve one new nutrition example.
- What is one common mistake a student should avoid when working with energy balance?
Nutrition across life stages
Concept: Nutrient needs change with growth, pregnancy, aging, activity, and health status.
Worked example: Folate needs are especially important before and during early pregnancy for neural-tube development.
Remember: Focus on the central relationship in nutrition across life stages, define the important terms, and connect each step to the evidence, rule, formula, or process being used.
Common mistakes: Common mistakes include memorizing nutrition across life stages without understanding when it applies, skipping units or definitions, and giving an answer without showing the reasoning that supports it.
Practice it
- Explain nutrition across life stages in your own words.
- Use the lesson idea to create or solve one new nutrition example.
- What is one common mistake a student should avoid when working with nutrition across life stages?