Dietary cholesterol refers to the type of cholesterol that is present in foods, particularly those derived from animal sources. Cholesterol is a fat-like substance found naturally within our bodies and plays an important role in various bodily functions such as hormone production and cell membrane stability. However, when consumed in excess through dietary intake, it can contribute to elevated levels of cholesterol in the bloodstream which may increase the risk of developing heart disease. Therefore, limiting one's consumption of foods high in dietary cholesterol is generally recommended as part of a healthy lifestyle.