CN Study Guide 2026
Everything you need to pass the CN 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.
📋 CN Exam Format at a Glance
📚 CN Topics to Study (69)
✍️ Sample CN Questions & Answers
1. In Certified Nutritionist, which action should be taken first when a safety incident occurs?
The immediate priority in any safety incident is to ensure all personnel are safe and out of danger before addressing other concerns.
2. During a supervised meal at a wellness clinic, a client with a known peanut allergy develops hives, lip swelling, and wheezing. After activating EMS, what is the priority intervention?
Anaphylaxis is treated first with intramuscular epinephrine in the outer thigh; antihistamines are only adjuncts.
3. A client in a nutrition counseling session suddenly clutches their throat and cannot speak, cough, or breathe. What should the nutritionist do first?
A conscious person who cannot speak, cough, or breathe has a complete airway obstruction requiring immediate abdominal thrusts.
4. Which dietary strategy is most beneficial for heart health?
Including omega-3 fatty acids, found in fatty fish and certain plant oils, and consuming whole foods like fruits, vegetables, and whole grains, are highly beneficial for heart health. Omega-3s reduce inflammation and improve cholesterol profiles, while whole foods provide essential nutrients and fiber that support cardiovascular function and lower disease risk.
5. Which fat-soluble vitamin is synthesized in the skin upon UV exposure?
Vitamin D is produced from 7-dehydrocholesterol when skin is exposed to UVB light.
6. Which dietary pattern has the strongest evidence for lowering blood pressure in hypertensive patients?
The DASH diet, rich in fruits, vegetables, and low-fat dairy while low in sodium, is clinically proven to reduce blood pressure.