Uridine is a nucleoside that plays a crucial role in the synthesis of RNA, which is essential for various biological processes. It is composed of a ribose sugar and a uracil base. Uridine is found naturally in foods such as brewer's yeast, fish, and meat, and it can also be produced in the body. In addition to its role in RNA production, uridine is involved in the metabolism of carbohydrates and lipids. Some studies suggest that uridine may have potential benefits for brain health and cognitive function, making it a topic of interest in the fields of nutrition and neuroscience.