Clinical Nutritionist Practice Test 2026 - Free Practice Questions and Study Guide

Essential fatty acids are crucial for brain function primarily because they are integral components of neuronal membranes and play a significant role in cognitive development and performance. The brain is composed of about 60% fat, with a substantial portion being made up of these fatty acids, particularly omega-3 and omega-6 fatty acids.

These fats are involved in the formation of cell membranes and myelin, which insulates nerve fibers, facilitating efficient communication between neurons. Additionally, essential fatty acids are precursors to signaling molecules known as eicosanoids, which have various roles in inflammation and other vital processes that affect brain health and function.

While vital for heart health and other bodily functions, essential fatty acids must be sourced from dietary sources because the human body cannot synthesize them. This underscores their importance in nutrition, as they contribute to both physical and cognitive health.