The metabolic role of fatty acids in the human body encompasses several critical functions. These compounds serve as a primary energy source, particularly during periods of fasting or prolonged exercise. Fatty acids are also essential for composing cell membranes, contributing to fluidity and stability. Moreover, they play a role in signaling processes by serving as precursors for hormones and other bioactive molecules. Additionally, certain fatty acids, such as omega-3, are vital for brain health and development, highlighting their importance in overall well-being.