HLTH 644 Quiz 3: Being Sweet Isn't Good |
Module 3 Week 3 | Questions and Answers |
2026/2027 Updated | 100% Correct - Liberty
University
Practice Question Bank & Answer Rationale
THIS PACK CONTAINS
48 exam-style multiple-choice questions. Each question includes the correct answer and a complete rationale
for focused revision.
COVERAGE
This quiz assesses graduate-level understanding of how added sugars-particularly fructose and sucrose-drive
metabolic dysfunction, including hepatic de novo lipogenesis, insulin resistance, dyslipidemia, and
cardiovascular risk. It integrates current dietary guidelines, WHO and AHA recommendations, and
evidence-based counseling strategies for reducing sugar-sweetened beverage intake in clinical and public
health settings.
STUDY GUIDE
Recommended duration: 75 minutes. Passing target: 80%.
HIGHP - Page 1 of 18
,1. Which metabolic characteristic best explains why excessive fructose consumption
promotes hepatic de novo lipogenesis more than glucose?
[ ] A. Fructose bypasses the rate-limiting step of glycolysis and enters the lipogenic pathway without
negative feedback.
[ ] B. Fructose directly inhibits carnitine palmitoyltransferase I, blocking fatty acid oxidation.
[ ] C. Fructose stimulates glucagon-like peptide-1 secretion, increasing insulin sensitivity.
[ ] D. Fructose is preferentially oxidized in skeletal muscle, sparing hepatic ATP.
CORRECT: A. Fructose bypasses the rate-limiting step of glycolysis and enters the lipogenic
pathway without negative feedback.
Fructose is metabolized by fructokinase, bypassing the phosphofructokinase-1 regulatory step, and its
carbons readily enter de novo lipogenesis without feedback inhibition. Glucose metabolism is tightly regulated
at multiple steps, limiting its conversion to fat under normal conditions. The other options describe
mechanisms not primarily responsible for fructose's lipogenic effect.
2. According to the 2020-2025 Dietary Guidelines for Americans, what is the recommended
limit for added sugars as a percentage of total daily calories?
[ ] A. Less than 5% of total daily calories
[ ] B. Less than 10% of total daily calories
[ ] C. Less than 15% of total daily calories
[ ] D. Less than 20% of total daily calories
CORRECT: B. Less than 10% of total daily calories
The 2020-2025 Dietary Guidelines for Americans recommend limiting added sugars to less than 10% of total
daily calories. The 5% threshold is stricter than the official guideline and is sometimes recommended by the
AHA for additional cardiovascular benefit. The 15% and 20% limits exceed current federal recommendations.
3. A public health team proposes a tax on sugar-sweetened beverages to reduce
consumption. Which outcome is most consistently supported by evidence from
jurisdictions that have implemented such taxes?
[ ] A. A significant reduction in overall obesity prevalence within one year
[ ] B. A decrease in purchases of taxed beverages and a modest increase in purchases of untaxed
alternatives
[ ] C. Elimination of socioeconomic disparities in sugar-sweetened beverage intake
[ ] D. A sharp decline in type 2 diabetes incidence among all age groups
CORRECT: B. A decrease in purchases of taxed beverages and a modest increase in purchases of
untaxed alternatives
Evidence from real-world sugar-sweetened beverage taxes shows reduced purchases of taxed beverages
and substitution with untaxed beverages, such as water or diet drinks. Reductions in obesity or diabetes
prevalence take years to manifest and are not typically observed within one year. Taxes alone have not
HIGHP - Page 2 of 18
, eliminated socioeconomic disparities in intake.
4. Which laboratory finding is most directly associated with high fructose intake and
suggests early metabolic dysfunction?
[ ] A. Elevated fasting glucose with normal triglycerides
[ ] B. Elevated serum uric acid and triglycerides
[ ] C. Low LDL cholesterol and elevated HDL cholesterol
[ ] D. Elevated ketone bodies and low insulin levels
CORRECT: B. Elevated serum uric acid and triglycerides
High fructose intake increases uric acid production via ATP depletion and purine degradation, and it promotes
hepatic triglyceride synthesis, leading to elevated triglycerides. Elevated fasting glucose with normal
triglycerides is less specific for fructose effects. Low LDL and elevated HDL are not typical; ketone elevation
with low insulin suggests fasting or diabetes, not fructose excess.
5. Which of the following best describes the primary mechanism by which
sugar-sweetened beverage consumption contributes to weight gain?
[ ] A. Liquid calories induce stronger satiety signals than solid food calories.
[ ] B. Liquid calories are less satiating, leading to incomplete compensatory reduction in solid food
intake.
[ ] C. Sugar-sweetened beverages increase resting metabolic rate, promoting fat storage.
[ ] D. The fructose in these beverages directly stimulates leptin secretion, increasing appetite.
CORRECT: B. Liquid calories are less satiating, leading to incomplete compensatory reduction in
solid food intake.
Liquid calories from sugar-sweetened beverages are less satiating than solid food, so individuals do not fully
compensate by eating less solid food, resulting in a net increase in energy intake. They do not induce
stronger satiety; they may increase metabolic rate only transiently, not enough to offset calories. Fructose
does not stimulate leptin secretion; it may actually reduce leptin sensitivity.
6. In counseling a patient to reduce added sugar intake, which strategy is most consistent
with current evidence-based practice?
[ ] A. Advise replacing all sugar-sweetened beverages with 100% fruit juice.
[ ] B. Recommend reading Nutrition Facts labels to identify added sugars and choose products with no
added sugars.
[ ] C. Suggest using artificial sweeteners as the sole long-term solution.
[ ] D. Focus exclusively on reducing table sugar, as it is the primary source of added sugars.
CORRECT: B. Recommend reading Nutrition Facts labels to identify added sugars and choose
HIGHP - Page 3 of 18
Module 3 Week 3 | Questions and Answers |
2026/2027 Updated | 100% Correct - Liberty
University
Practice Question Bank & Answer Rationale
THIS PACK CONTAINS
48 exam-style multiple-choice questions. Each question includes the correct answer and a complete rationale
for focused revision.
COVERAGE
This quiz assesses graduate-level understanding of how added sugars-particularly fructose and sucrose-drive
metabolic dysfunction, including hepatic de novo lipogenesis, insulin resistance, dyslipidemia, and
cardiovascular risk. It integrates current dietary guidelines, WHO and AHA recommendations, and
evidence-based counseling strategies for reducing sugar-sweetened beverage intake in clinical and public
health settings.
STUDY GUIDE
Recommended duration: 75 minutes. Passing target: 80%.
HIGHP - Page 1 of 18
,1. Which metabolic characteristic best explains why excessive fructose consumption
promotes hepatic de novo lipogenesis more than glucose?
[ ] A. Fructose bypasses the rate-limiting step of glycolysis and enters the lipogenic pathway without
negative feedback.
[ ] B. Fructose directly inhibits carnitine palmitoyltransferase I, blocking fatty acid oxidation.
[ ] C. Fructose stimulates glucagon-like peptide-1 secretion, increasing insulin sensitivity.
[ ] D. Fructose is preferentially oxidized in skeletal muscle, sparing hepatic ATP.
CORRECT: A. Fructose bypasses the rate-limiting step of glycolysis and enters the lipogenic
pathway without negative feedback.
Fructose is metabolized by fructokinase, bypassing the phosphofructokinase-1 regulatory step, and its
carbons readily enter de novo lipogenesis without feedback inhibition. Glucose metabolism is tightly regulated
at multiple steps, limiting its conversion to fat under normal conditions. The other options describe
mechanisms not primarily responsible for fructose's lipogenic effect.
2. According to the 2020-2025 Dietary Guidelines for Americans, what is the recommended
limit for added sugars as a percentage of total daily calories?
[ ] A. Less than 5% of total daily calories
[ ] B. Less than 10% of total daily calories
[ ] C. Less than 15% of total daily calories
[ ] D. Less than 20% of total daily calories
CORRECT: B. Less than 10% of total daily calories
The 2020-2025 Dietary Guidelines for Americans recommend limiting added sugars to less than 10% of total
daily calories. The 5% threshold is stricter than the official guideline and is sometimes recommended by the
AHA for additional cardiovascular benefit. The 15% and 20% limits exceed current federal recommendations.
3. A public health team proposes a tax on sugar-sweetened beverages to reduce
consumption. Which outcome is most consistently supported by evidence from
jurisdictions that have implemented such taxes?
[ ] A. A significant reduction in overall obesity prevalence within one year
[ ] B. A decrease in purchases of taxed beverages and a modest increase in purchases of untaxed
alternatives
[ ] C. Elimination of socioeconomic disparities in sugar-sweetened beverage intake
[ ] D. A sharp decline in type 2 diabetes incidence among all age groups
CORRECT: B. A decrease in purchases of taxed beverages and a modest increase in purchases of
untaxed alternatives
Evidence from real-world sugar-sweetened beverage taxes shows reduced purchases of taxed beverages
and substitution with untaxed beverages, such as water or diet drinks. Reductions in obesity or diabetes
prevalence take years to manifest and are not typically observed within one year. Taxes alone have not
HIGHP - Page 2 of 18
, eliminated socioeconomic disparities in intake.
4. Which laboratory finding is most directly associated with high fructose intake and
suggests early metabolic dysfunction?
[ ] A. Elevated fasting glucose with normal triglycerides
[ ] B. Elevated serum uric acid and triglycerides
[ ] C. Low LDL cholesterol and elevated HDL cholesterol
[ ] D. Elevated ketone bodies and low insulin levels
CORRECT: B. Elevated serum uric acid and triglycerides
High fructose intake increases uric acid production via ATP depletion and purine degradation, and it promotes
hepatic triglyceride synthesis, leading to elevated triglycerides. Elevated fasting glucose with normal
triglycerides is less specific for fructose effects. Low LDL and elevated HDL are not typical; ketone elevation
with low insulin suggests fasting or diabetes, not fructose excess.
5. Which of the following best describes the primary mechanism by which
sugar-sweetened beverage consumption contributes to weight gain?
[ ] A. Liquid calories induce stronger satiety signals than solid food calories.
[ ] B. Liquid calories are less satiating, leading to incomplete compensatory reduction in solid food
intake.
[ ] C. Sugar-sweetened beverages increase resting metabolic rate, promoting fat storage.
[ ] D. The fructose in these beverages directly stimulates leptin secretion, increasing appetite.
CORRECT: B. Liquid calories are less satiating, leading to incomplete compensatory reduction in
solid food intake.
Liquid calories from sugar-sweetened beverages are less satiating than solid food, so individuals do not fully
compensate by eating less solid food, resulting in a net increase in energy intake. They do not induce
stronger satiety; they may increase metabolic rate only transiently, not enough to offset calories. Fructose
does not stimulate leptin secretion; it may actually reduce leptin sensitivity.
6. In counseling a patient to reduce added sugar intake, which strategy is most consistent
with current evidence-based practice?
[ ] A. Advise replacing all sugar-sweetened beverages with 100% fruit juice.
[ ] B. Recommend reading Nutrition Facts labels to identify added sugars and choose products with no
added sugars.
[ ] C. Suggest using artificial sweeteners as the sole long-term solution.
[ ] D. Focus exclusively on reducing table sugar, as it is the primary source of added sugars.
CORRECT: B. Recommend reading Nutrition Facts labels to identify added sugars and choose
HIGHP - Page 3 of 18
