The calcification in calcific tendinitis is not caused by calcium consumed through food directly accumulating in the tendons. The cause is a pathological process in which cells degenerate like chondrocytes in a hypoxic environment within the tendon and secrete calcium crystals. Therefore, reducing calcium intake does not reduce calcification, and a deficiency in calcium and vitamin D is actually detrimental to bone and tendon recovery. A balanced protein intake aids in tendon regeneration, while excessive alcohol consumption and smoking can impair blood flow to the tendons and delay recovery. Korean Medicine Clinic Perspective In Korean medicine, digestive function is viewed as supplying nutrients to muscles and tendons. Cold and greasy foods, along with excessive drinking, damage the digestive system, creating sticky waste products. These waste products block the pathways of Qi and blood, hindering Qi and blood circulation in the shoulder. Therefore, during the recovery phase of calcific tendinitis, foods that are easy to digest and reduce damp and hot energies in the body are recommended. Reducing the consumption of cold foods, excessive alcohol, and wheat flour is a fundamental dietary principle of Korean medicine. At Dongjedang, we provide guidance on lifestyle factors that contribute to waste products alongside treatment.