What circulates nutritive Qi in the body?

The circulation of nutritive Qi in the body is primarily associated with blood. In Traditional Chinese Medicine (TCM), blood is considered the carrier of nutritive Qi, which nourishes the organs, tissues, and overall bodily functions. While Qi itself is a vital life force that encompasses various forms of energy and activity within the body, it is blood that actually transports and distributes this nutritive essence. As blood flows through the channels and collaterals, it brings vital nutrients and energetics to cells, promoting growth, healing, and sustaining overall health.

Essence refers to a more foundational substance in TCM, acting as a source of energy but is not directly responsible for the circulation of nutritive Qi. Body fluids, while essential for hydration and various bodily functions, do not serve as the principal medium for carrying that nutritive Qi throughout the body. Lastly, Qi, as a concept, represents the flow of energy but needs blood to manifest its nourishing function in a tangible way. Therefore, blood is the correct answer, as it plays a critical role in circulating and embodying nutritive Qi within the body.