Which point would be used for treating food retention in acupuncture?

The correct answer for treating food retention in acupuncture is Inner NeiTing. This point, located on the medial side of the leg, is known for its efficacy in alleviating digestive issues, including food retention. It is part of the Stomach channel and is specifically used to harmonize the stomach, clear heat, and resolve food stagnation.

Inner NeiTing is particularly effective in cases where there is a buildup of food leading to discomfort and digestive problems. Its location and functional qualities make it a key point in acupuncture therapies aimed at addressing these types of conditions.

While the other options also have specific clinical uses, they do not primarily target food retention. For example, P-6 is commonly used for nausea and digestive issues as well but is more associated with regulating the Heart and calming the Spirit. P-5 has indications related to Phlegm accumulation and can address digestion but is not as directly linked to food retention as Inner NeiTing. LU-10 is primarily associated with treating conditions related to the Lung, such as cough and sore throat, and does not play a direct role in digestive disturbances. Thus, Inner NeiTing is the most appropriate choice for treating food retention in acupuncture practice.