WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED!! 2026/2027 2026/2027 | Page 1 | Passing Score: 80%
WESTERN GOVERNORS UNIVERSITY
WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27
QUESTIONS & ANSWERS ALREADY PASSED!! 2026/2027
NUTRITION · Official Exam 2026/2027
100 80% CERTIFIED
QUESTIONS PASSING SCORE RECERTIFICATION
TABLE OF CONTENTS
Section 1 Nutrition Principles and Macronutrients Q1-Q25
Section 2 Micronutrients and Water Q26-Q45
Section 3 Nutrition Across the Lifespan Q46-Q65
Section 4 Diet and Disease Q66-Q83
Section 5 Food Safety and Community Nutrition Q84-Q100
Instructions: Select the single best answer for each question. This exam is designed for WGU Nutrition D440 study guide preparation.
Passing score: 80% (80 questions correct).
WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED!! 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 1 of 54
,ON PRINCIPLES AND MACRONUTRIENTS | Q1-Q25 | WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED
Q1 Question 1 of 100
A 34-year-old woman visits her primary care provider reporting chronic fatigue and difficulty
concentrating despite sleeping 8 hours per night. Her diet history reveals she skips breakfast, eats a
fast-food lunch, and consumes a high-sugar snack before bed. The nurse explains that the most likely
nutritional cause of her fatigue is:
A. Excessive protein intake causing amino acid toxicity that impairs neurological function
B. Inadequate total caloric intake and poor nutrient density leading to insufficient energy availability for
metabolic processes throughout the day
C. Consuming too much dietary fiber that blocks absorption of all macronutrients in the gastrointestinal
tract
D. Vitamin C overdose from fortified foods causing oxidative stress and cellular damage
Correct Answer: B
Rationale:
Poor nutrient density and inadequate caloric intake directly reduce energy availability, causing fatigue. Excessive
protein rarely causes amino acid toxicity in healthy individuals. Dietary fiber does not block all macronutrient absorption.
Vitamin C overdose from fortified foods is extremely uncommon and not the likely cause.
Q2 Question 2 of 100
A 28-year-old male athlete training for a marathon asks his sports nutritionist about the recommended
daily carbohydrate intake to support his training volume of 90 minutes per day. The sports nutritionist
should recommend a carbohydrate intake of:
A. 1 to 3 grams per kilogram of body weight per day, as the body primarily uses fat during endurance
exercise
B. 6 to 10 grams per kilogram of body weight per day to adequately replenish glycogen stores depleted
during prolonged moderate-to-high-intensity endurance training
C. 12 to 15 grams per kilogram of body weight per day to ensure maximum glycogen supercompensation
at all times
D. 2 to 4 grams per kilogram of body weight per day, since excess carbohydrate is always stored as fat
regardless of activity level
Correct Answer: B
Rationale:
Endurance athletes training 1-3 hours per day need 6-10 g/kg/day of carbohydrate to replenish glycogen. Only 1-3 g/kg
is insufficient for glycogen repletion. 12-15 g/kg is excessive and not recommended. 2-4 g/kg is the range for moderate
exercise, not sustained endurance training.
WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED!! 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 2 of 54
,ON PRINCIPLES AND MACRONUTRIENTS | Q1-Q25 | WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED
Q3 Question 3 of 100
A 42-year-old man with a BMI of 32 is counseled by a registered dietitian about healthy weight loss
strategies. He asks why a moderate protein intake is important during caloric restriction. The dietitian
explains that adequate protein during weight loss:
A. Causes rapid weight loss by drawing water from adipose tissue cells through osmotic pressure
B. Automatically converts all excess calories into muscle tissue regardless of exercise habits
C. Eliminates the need for any physical activity since protein alone drives fat metabolism
D. Preserves lean muscle mass while promoting fat loss, maintains satiety to support adherence to the
reduced-calorie diet, and has a higher thermic effect compared to fats and carbohydrates
Correct Answer: D
Rationale:
Adequate protein during caloric restriction preserves lean body mass, supports satiety, and has a higher thermic effect.
Protein does not convert excess calories to muscle without exercise. Physical activity remains important for health.
Protein does not cause weight loss through osmotic water extraction from fat cells.
Q4 Question 4 of 100
A college student taking a nutrition course is confused about the difference between essential and
nonessential amino acids. Her professor explains that essential amino acids are defined as amino
acids that:
A. Cannot be synthesized by the human body in sufficient quantities and must be obtained from dietary
sources to support normal physiological function and protein synthesis
B. Are only found in animal protein sources and cannot be obtained from any plant-based foods
C. Are produced exclusively by the liver during fasting states and are not needed from the diet under any
circumstances
D. Are considered more important than nonessential amino acids for all metabolic processes in the body
Correct Answer: A
Rationale:
Essential amino acids cannot be synthesized by the body in sufficient quantities and must come from the diet. They are
found in both animal and plant proteins. The body cannot produce them during fasting. The term 'essential' refers to
dietary requirement, not metabolic importance.
WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED!! 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 3 of 54
,ON PRINCIPLES AND MACRONUTRIENTS | Q1-Q25 | WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED
Q5 Question 5 of 100
A 55-year-old woman with elevated LDL cholesterol asks her healthcare provider about dietary fat
modifications. The provider recommends replacing saturated fats with unsaturated fats because
unsaturated fats:
A. Provide more calories per gram than saturated fats, which paradoxically improves the lipid profile
B. Completely eliminate all cholesterol from the bloodstream within two weeks of dietary change
C. Reduce LDL cholesterol levels by enhancing receptor-mediated clearance from the bloodstream and do
not stimulate hepatic cholesterol synthesis the way saturated fats do
D. Are only found in plant-based foods and all plant foods inherently lower cholesterol regardless of fat
type
Correct Answer: C
Rationale:
Unsaturated fats reduce LDL by enhancing receptor-mediated clearance and do not stimulate hepatic cholesterol
synthesis like saturated fats. They cannot eliminate all cholesterol from blood. Unsaturated and saturated fats provide
the same 9 kcal/gram. Not all plant foods lower cholesterol simply by being plant-based.
Q6 Question 6 of 100
A registered dietitian is teaching a community class about the Acceptable Macronutrient Distribution
Ranges (AMDR). She explains that the AMDR for carbohydrates for adults is:
A. 20 to 35 percent of total daily calories, which is the same range recommended for total fat intake
B. 10 to 35 percent of total daily calories, matching the range recommended for protein intake
C. 45 to 65 percent of total daily calories, which provides sufficient glucose for brain function while allowing
adequate intake of protein and fat
D. 70 to 85 percent of total daily calories, reflecting the dominance of carbohydrate in most world diets
Correct Answer: C
Rationale:
The AMDR for carbohydrates is 45-65% of total calories, supporting brain glucose needs while allowing adequate
protein and fat. 10-35% is the AMDR for protein. 20-35% is the AMDR for fat. 70-85% exceeds the recommended
range.
WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED!! 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 4 of 54
WESTERN GOVERNORS UNIVERSITY
WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27
QUESTIONS & ANSWERS ALREADY PASSED!! 2026/2027
NUTRITION · Official Exam 2026/2027
100 80% CERTIFIED
QUESTIONS PASSING SCORE RECERTIFICATION
TABLE OF CONTENTS
Section 1 Nutrition Principles and Macronutrients Q1-Q25
Section 2 Micronutrients and Water Q26-Q45
Section 3 Nutrition Across the Lifespan Q46-Q65
Section 4 Diet and Disease Q66-Q83
Section 5 Food Safety and Community Nutrition Q84-Q100
Instructions: Select the single best answer for each question. This exam is designed for WGU Nutrition D440 study guide preparation.
Passing score: 80% (80 questions correct).
WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED!! 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 1 of 54
,ON PRINCIPLES AND MACRONUTRIENTS | Q1-Q25 | WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED
Q1 Question 1 of 100
A 34-year-old woman visits her primary care provider reporting chronic fatigue and difficulty
concentrating despite sleeping 8 hours per night. Her diet history reveals she skips breakfast, eats a
fast-food lunch, and consumes a high-sugar snack before bed. The nurse explains that the most likely
nutritional cause of her fatigue is:
A. Excessive protein intake causing amino acid toxicity that impairs neurological function
B. Inadequate total caloric intake and poor nutrient density leading to insufficient energy availability for
metabolic processes throughout the day
C. Consuming too much dietary fiber that blocks absorption of all macronutrients in the gastrointestinal
tract
D. Vitamin C overdose from fortified foods causing oxidative stress and cellular damage
Correct Answer: B
Rationale:
Poor nutrient density and inadequate caloric intake directly reduce energy availability, causing fatigue. Excessive
protein rarely causes amino acid toxicity in healthy individuals. Dietary fiber does not block all macronutrient absorption.
Vitamin C overdose from fortified foods is extremely uncommon and not the likely cause.
Q2 Question 2 of 100
A 28-year-old male athlete training for a marathon asks his sports nutritionist about the recommended
daily carbohydrate intake to support his training volume of 90 minutes per day. The sports nutritionist
should recommend a carbohydrate intake of:
A. 1 to 3 grams per kilogram of body weight per day, as the body primarily uses fat during endurance
exercise
B. 6 to 10 grams per kilogram of body weight per day to adequately replenish glycogen stores depleted
during prolonged moderate-to-high-intensity endurance training
C. 12 to 15 grams per kilogram of body weight per day to ensure maximum glycogen supercompensation
at all times
D. 2 to 4 grams per kilogram of body weight per day, since excess carbohydrate is always stored as fat
regardless of activity level
Correct Answer: B
Rationale:
Endurance athletes training 1-3 hours per day need 6-10 g/kg/day of carbohydrate to replenish glycogen. Only 1-3 g/kg
is insufficient for glycogen repletion. 12-15 g/kg is excessive and not recommended. 2-4 g/kg is the range for moderate
exercise, not sustained endurance training.
WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED!! 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 2 of 54
,ON PRINCIPLES AND MACRONUTRIENTS | Q1-Q25 | WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED
Q3 Question 3 of 100
A 42-year-old man with a BMI of 32 is counseled by a registered dietitian about healthy weight loss
strategies. He asks why a moderate protein intake is important during caloric restriction. The dietitian
explains that adequate protein during weight loss:
A. Causes rapid weight loss by drawing water from adipose tissue cells through osmotic pressure
B. Automatically converts all excess calories into muscle tissue regardless of exercise habits
C. Eliminates the need for any physical activity since protein alone drives fat metabolism
D. Preserves lean muscle mass while promoting fat loss, maintains satiety to support adherence to the
reduced-calorie diet, and has a higher thermic effect compared to fats and carbohydrates
Correct Answer: D
Rationale:
Adequate protein during caloric restriction preserves lean body mass, supports satiety, and has a higher thermic effect.
Protein does not convert excess calories to muscle without exercise. Physical activity remains important for health.
Protein does not cause weight loss through osmotic water extraction from fat cells.
Q4 Question 4 of 100
A college student taking a nutrition course is confused about the difference between essential and
nonessential amino acids. Her professor explains that essential amino acids are defined as amino
acids that:
A. Cannot be synthesized by the human body in sufficient quantities and must be obtained from dietary
sources to support normal physiological function and protein synthesis
B. Are only found in animal protein sources and cannot be obtained from any plant-based foods
C. Are produced exclusively by the liver during fasting states and are not needed from the diet under any
circumstances
D. Are considered more important than nonessential amino acids for all metabolic processes in the body
Correct Answer: A
Rationale:
Essential amino acids cannot be synthesized by the body in sufficient quantities and must come from the diet. They are
found in both animal and plant proteins. The body cannot produce them during fasting. The term 'essential' refers to
dietary requirement, not metabolic importance.
WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED!! 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 3 of 54
,ON PRINCIPLES AND MACRONUTRIENTS | Q1-Q25 | WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED
Q5 Question 5 of 100
A 55-year-old woman with elevated LDL cholesterol asks her healthcare provider about dietary fat
modifications. The provider recommends replacing saturated fats with unsaturated fats because
unsaturated fats:
A. Provide more calories per gram than saturated fats, which paradoxically improves the lipid profile
B. Completely eliminate all cholesterol from the bloodstream within two weeks of dietary change
C. Reduce LDL cholesterol levels by enhancing receptor-mediated clearance from the bloodstream and do
not stimulate hepatic cholesterol synthesis the way saturated fats do
D. Are only found in plant-based foods and all plant foods inherently lower cholesterol regardless of fat
type
Correct Answer: C
Rationale:
Unsaturated fats reduce LDL by enhancing receptor-mediated clearance and do not stimulate hepatic cholesterol
synthesis like saturated fats. They cannot eliminate all cholesterol from blood. Unsaturated and saturated fats provide
the same 9 kcal/gram. Not all plant foods lower cholesterol simply by being plant-based.
Q6 Question 6 of 100
A registered dietitian is teaching a community class about the Acceptable Macronutrient Distribution
Ranges (AMDR). She explains that the AMDR for carbohydrates for adults is:
A. 20 to 35 percent of total daily calories, which is the same range recommended for total fat intake
B. 10 to 35 percent of total daily calories, matching the range recommended for protein intake
C. 45 to 65 percent of total daily calories, which provides sufficient glucose for brain function while allowing
adequate intake of protein and fat
D. 70 to 85 percent of total daily calories, reflecting the dominance of carbohydrate in most world diets
Correct Answer: C
Rationale:
The AMDR for carbohydrates is 45-65% of total calories, supporting brain glucose needs while allowing adequate
protein and fat. 10-35% is the AMDR for protein. 20-35% is the AMDR for fat. 70-85% exceeds the recommended
range.
WGU NUTRITION D440 COMPLETED STUDY GUIDE 2026/27 QUESTIONS & ANSWERS ALREADY PASSED!! 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 4 of 54
