Tongue coating inside yellow outside white is kidney yang deficiency or kidney yin deficiency

Deficiency of kidney yang refers to deficiency of yin fluid in the kidney. At this time, the patient's body yang is relatively strong, the tongue is red, and the tongue coating is less, generally not causing the yellow and white inside the tongue coating. When deficiency of kidney yang occurs, the patient's body yang deficiency may affect the metaplasia, circulation and distribution of essence and blood, so that deficiency cold is endogenous, causing the yellow and white inside the tongue coating. Therefore, the yellow and white inside the tongue coating is generally deficiency of kidney yang.

Patients with deficiency of kidney yang should ensure adequate sleep at ordinary times, adjust their diet structure reasonably, and eat more mutton, leek, black sesame and other foods that warm and tonify kidney yang, which is conducive to the recovery of the disease.