The largest organelle in the human body is the liver, which can be considered an organelle due to its various complex functions. The liver is critical for processing nutrients, detoxifying harmful substances, producing bile for digestion, and regulating metabolism. It helps maintain homeostasis by controlling blood sugar levels, synthesizing proteins, and metabolizing fats. Additionally, the liver plays a vital role in the immune system by filtering pathogens from the blood. Thanks to its essential functions, the liver is a key player in overall health and well-being.