Certified Nutrition Specialist (CNS) Practice Exam 2026 - Free CNS Practice Questions and Study Guide

Fissures of nasal sebaceous glands are associated with deficiencies that impact skin health and the integrity of oil glands. In this context, riboflavin (vitamin B2) plays a crucial role in maintaining skin health and is essential for cellular respiration, energy production, and the metabolism of fats, carbohydrates, and proteins. A deficiency in riboflavin can lead to issues such as oily skin, cracking, and fissures in sebaceous glands, particularly in areas like the nose.

While other options include nutrients that are important for overall health, riboflavin is specifically linked to skin integrity and is the most directly associated with such fissures. Vitamin A, C, and zinc do support skin health, but the specific manifestation described aligns more closely with riboflavin deficiency, as riboflavin is particularly implicated in skin conditions and sebaceous gland function.