The primary function of the liver is to filter and detoxify blood coming from the digestive tract before it enters the rest of the body. It processes nutrients, stores vitamins and minerals, and produces bile, which helps digest fats. Moreover, the liver plays a crucial role in metabolism, converting excess glucose into glycogen for storage and regulating blood sugar levels. It also synthesizes proteins essential for blood clotting and other functions. Given its numerous roles, the liver is vital for maintaining overall health and homeostasis in the body.