血液中的脂肪类物质，称为血脂。血浆中的脂类包括胆固醇、甘油三脂、磷脂和非游离脂肪酸。在血液中与不同的蛋白质结合，以“脂蛋白”形式存在。胆固醇大部分由人体合成，少部分来自饮食。而甘油三酯正好相反，大部分从饮食中吸收，少量为人体合成。血脂在人体中有许多重要功 Blood fatty substances, known as blood lipids. Lipids in plasma include cholesterol, triglycerides, phospholipids and non-free fatty acids. It binds to different proteins in the blood and exists in the form of “lipoproteins.” Cholesterol mostly synthesized by the human body, a small part from the diet. The opposite of triglycerides, most absorbed from the diet, a small amount of human synthesis. Lipids have many important functions in the body