Lipids are essential biomolecules involved in various biological functions, including membrane structure, energy storage, and signaling. They play a crucial role in drug delivery systems, enhancing solubility and bioavailability of therapeutic compounds. Different lipid types, such as phospholipids, sterols, and sphingolipids, contribute to stability and functionality in formulations. Lipid-based carriers, including liposomes and micelles, are widely used in nanomedicine, offering targeted delivery and controlled release for improved therapeutic outcomes.