IBCLC Practice Exam 2026 – Complete Preparation Guide

Docosahexaenoic acid (DHA) plays a crucial role in several key areas of infant development, particularly cognitive and visual functions. One of the primary roles of DHA is in cognitive development, where it contributes to the structural composition of the brain. Adequate levels of DHA are associated with improved cognitive outcomes, including enhanced learning and memory abilities in infants.

Additionally, DHA is critically involved in nerve myelination, the process of forming a myelin sheath around nerve fibers. This myelination is essential for proper nervous system function, enabling efficient transmission of nerve impulses, which is vital for overall brain development and the maturation of motor and cognitive skills.

Visual development is another significant role of DHA. High concentrations of DHA are found in the retina, and adequate intake is linked to better visual acuity and perception in infants.

These elements highlight why this answer is considered correct, as it encompasses the key developmental aspects that DHA supports: cognitive development, nerve myelination, and visual development.