Question 1

Which of the following best describes the main difference between a cohort study and a case-control study in nutrition research?

Accepted Answer

A cohort study follows groups over time to compare outcomes, while a case-control study starts with outcomes and looks back at exposures.

Question 2

A nutrition researcher wants to determine if a new dietary supplement causes weight loss in adults. Which study design would provide the strongest evidence for causation?

Accepted Answer

Randomized Control Trial

Question 3

Which of the following is a key characteristic of nutrition quackery?

Accepted Answer

The product promises quick improvement in health or physical performance.

Question 4

A researcher uses a 24-hour recall to assess dietary intake in a population. Which of the following is a limitation of this method?

Accepted Answer

It may not reflect usual intake due to day-to-day variation.

Question 5

Which of the following equations best represents the concept of association, but not causation, in observational nutrition studies?

Accepted Answer

$$X \leftrightarrow Y$$

Question 6

A nutrition app is being evaluated for its usefulness among athletes. Which feature would be most important for this population?

Accepted Answer

Detailed macronutrient tracking (carbohydrates, proteins, fats)

Question 7

Which of the following is a red flag that a nutrition claim may be unreliable?

Accepted Answer

The claim is based on a single poorly controlled study.

Question 8

A cross-sectional study is best described as:

Accepted Answer

A snapshot of a population at a single point in time.

Question 9

Which of the following is NOT a recommended step when evaluating the reliability of a nutrition website?

Accepted Answer

Checking if the website is sponsored by a food supplement company.

Question 10

A food industry-funded study reports a positive effect of a new snack on heart health. What is the most important question to ask when evaluating this research?

Accepted Answer

Did the researchers disclose any conflicts of interest or funding sources?

Question 11

Which of the following best describes a longitudinal study in nutrition research?

Accepted Answer

It collects data from the same individuals repeatedly over a long period.

Question 12

Which of the following is a critical component of a well-designed nutrition experiment?

Accepted Answer

Adequate sample size to reduce the likelihood of chance findings.

Question 13

A nutritionist wants to understand the mechanism by which a nutrient affects metabolism. Which type of study is most appropriate?

Accepted Answer

Cell (in vitro) study

Question 14

Which of the following is a sign that a nutrition product may be promoted through quackery?

Accepted Answer

It is advertised mainly through anecdotes and testimonials.

Question 15

Which of the following best explains why association does not imply causation in observational studies?

Accepted Answer

Other variables may influence both the exposure and the outcome.

Question 16

A food frequency questionnaire is most useful for:

Accepted Answer

Assessing usual dietary intake patterns over an extended period.

Question 17

Which of the following organizations is considered a reliable source for evidence-based nutrition information?

Accepted Answer

Academy of Nutrition and Dietetics (AND)

Question 18

If a nutrition app is difficult to use and only reports calories, which population might find it least useful?

Accepted Answer

Individuals with medical conditions requiring micronutrient tracking

Question 19

Which of the following best describes the purpose of a control group in a randomized control trial?

Accepted Answer

To provide a baseline for comparison to the experimental group

Question 20

A nutrition study finds a statistically significant association between high sugar intake and increased risk of diabetes. Which of the following statements is most accurate?

Accepted Answer

High sugar intake is associated with, but does not necessarily cause, increased risk of diabetes.

Nutrition Science and Research: Evaluating Nutrition Information and Research Methods

Guida di studio - Domande di pratica

Study guide - Flashcard