what is the main purpose of recommended dietary allowances rdas
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LPN Nutrition Practice Test

1. What is the main purpose of Recommended Dietary Allowances (RDAs)?

Correct answer: A

Rationale: The main purpose of Recommended Dietary Allowances (RDAs) is to provide guidelines for nutrient intakes that meet the needs of most healthy people. Choice B is incorrect because RDAs aim beyond just survival requirements. Choice C is incorrect because establishing maximum safe levels is the role of Tolerable Upper Intake Levels (ULs). Choice D is incorrect because preventing chronic diseases is more associated with Dietary Reference Intakes (DRIs) like Adequate Intakes (AIs) and Tolerable Upper Intake Levels (ULs). Therefore, the correct answer is A.

2. What is one primary factor that influences nutrient needs in individuals?

Correct answer: A

Rationale: Correct. Age is one of the primary factors influencing nutrient needs. Different life stages, such as infancy, childhood, adulthood, and old age, require varying amounts of nutrients. Gender (choice B) can influence nutrient needs to some extent, but age plays a more significant role. Genetics (choice C) may affect how individuals metabolize certain nutrients but is not a primary factor in determining overall nutrient needs. Physical activity level (choice D) can impact energy requirements but is not as fundamental as age in influencing overall nutrient needs.

3. Which of the following statements about nutrition is true?

Correct answer: D

Rationale: The correct answer is D. Nutrient recommendations are designed to meet the needs of most healthy people, providing guidelines for a balanced diet. Choice A is incorrect because while nutrition plays a crucial role in health, it is not the only factor influencing it. Choice B is incorrect as nutrient needs vary based on factors like age, gender, activity level, and health status. Choice C is incorrect because all nutrients are essential for different bodily functions, and none can be deemed universally more important than others.

4. What dietary recommendation should be made to a child with iron-deficiency anemia?

Correct answer: B

Rationale: The correct recommendation for a child with iron-deficiency anemia is to include high-iron foods like spinach, red meat, and beans in their diet. These foods are rich sources of iron and can help address the deficiency. Choice A is incorrect as dairy products do not provide significant iron content. Choice C is incorrect because protein intake does not need to be decreased; in fact, lean meats are good sources of iron. Choice D is also incorrect as whole grains can be a part of a healthy diet and do not need to be avoided in this case.

5. How should a caregiver manage a child with a known allergy to peanuts?

Correct answer: A

Rationale: Avoiding peanut-containing products is crucial for managing a peanut allergy and preventing allergic reactions. Choice B suggesting regular exposure to peanuts can be harmful and trigger severe allergic reactions in a child with a peanut allergy. Regular exposure can increase the risk of anaphylaxis. Choice C of administering antihistamines daily is not a primary prevention strategy and should not be the first-line approach for managing a peanut allergy. Antihistamines only treat symptoms and do not prevent the allergic reaction. Choice D of recommending peanut-containing supplements can also lead to severe allergic reactions and is not recommended for a child with a known peanut allergy. It is essential to eliminate all sources of peanuts to prevent accidental exposure and potential life-threatening reactions.

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