Fatty acids are organic molecules composed of long hydrocarbon chains with a carboxylic acid group at one end. They are essential building blocks of fats and play vital roles in various biological processes. Fatty acids are classified into saturated, monounsaturated, and polyunsaturated types based on their chemical structure. They are a key source of energy for the body, serve as structural components of cell membranes, and are involved in the synthesis of various lipid molecules like triglycerides and phospholipids. Additionally, specific fatty acids like omega-3 and omega-6 are essential for human health and must be obtained from the diet. Fatty acids have far-reaching implications for nutrition, metabolism, and overall well-being, making them a critical component of our biology and diet.