CNS Study Guide 2026
Everything you need to pass the CNS exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 CNS Exam Format at a Glance
📚 CNS Topics to Study (19)
✍️ Sample CNS Questions & Answers
1. What is a "control group" in Certified Nutrition Specialist Exam research?
The control group does not receive the experimental treatment or intervention, providing a baseline against which the experimental group's results can be compared to determine the effect of the treatment.
2. The functions of vitamin K depend largely on which of the following minerals?
Explanation: The functions of vitamin K largely depend on calcium. Vitamin K plays a crucial role in the activation of proteins involved in blood clotting and bone metabolism. These processes require calcium as a cofactor for the proper functioning of vitamin K-dependent enzymes. Therefore, adequate calcium levels are necessary for vitamin K to perform its physiological functions effectively. Understanding the interplay between vitamin K and calcium is fundamental to comprehending their roles in blood coagulation and bone health.
3. Which type of assessment in Certified Nutrition Specialist Exam compares an individual's performance to a predetermined standard?
Criterion-referenced assessment compares performance against a fixed set of criteria or standards, determining whether specific competencies have been met regardless of how others perform.
4. Which condition in late pregnancy, characterized by protein-restricted diets and poor nutrient density, is associated with increased adult offspring risk of cardiovascular disease and type 2 diabetes?
The DOHaD hypothesis posits that maternal nutritional deprivation during critical windows programs fetal metabolism, increasing offspring risk of chronic metabolic disease.
5. Which growth chart system is recommended by the WHO for assessing growth in children under age 2 in the United States and represents optimal growth under ideal nutritional conditions?
The WHO standards, based on a multinational sample of breastfed children raised under optimal conditions, represent 'how children should grow' and are recommended for children under 2 in the US.
6. What is the primary cause of the reduced vitamin B12 absorption commonly seen in older adults, often requiring supplementation with crystalline B12?
Atrophic gastritis, prevalent in 10–30% of older adults, reduces gastric acid and intrinsic factor secretion, impairing protein-bound B12 digestion but sparing absorption of crystalline (free) B12.
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How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy
Sources & references
Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy
- theana.org — Test delivery, exam format, passing score, retake policy, score release, time limit, score validity, registration deadline, test dates, renewal · verified Oct 2026