There are three types of lipids in the body, triglycerides, phospholipids and sterols. These are esters of fatty acids containing various alcohols. When you pinch an inch around your waist, you are pinching triglycerides. Triglycerides and phospholipids are made up of fatty acids and glycerols and are commonly referred to as fats. Some may be unhealthy in large amounts, such as saturated fats, while others should be avoided altogether, like trans fats. Please use one of the following formats to cite this article in your essay, paper or report: APA. They provide high energy and perform three important biological functions in the body: to provide structure to cell membranes, to store energy, and to function as signaling molecules. Fats make up the largest category of lipids, and also go by the terms triacylglycerols, triglycerides, and glycerolipids.There are several types of fats. Fatty acids are the main building blocks of the various groups of lipids. Aliouche, Hidaya. Lipids are insoluble organic compounds that consist of fat and oil. Fats. Triglycerides are also the main fats we store in our body. Types of lipids Simple lipids. They are an ester of long-chain alcohol and a fatty acid with chains of the order of 12-34 carbon atoms in length. In the human body, the main lipids that are of importance are triglycerides, phospholipids and cholesterol. The chemical composition of these molecules includes hydrogen, carbon, and oxygen. Types of Lipids. Triglycerides are also known as triacylglycerols and compose 95% of fat in the foods we eat. Waxes – they have a high molecular weight monohydric alcohols. Lipid Types: Storage, Structural Lipids & Others. (2019, May 01).