What are the similarities between "sub-health" in western medicine, "kidney deficiency" in traditional Chinese medicine and the theory of body fluid pH balance?

Kidney deficiency in traditional Chinese medicine will lead to sub-health in western medicine, but the concept of sub-health is large, which can correspond to various deficiency syndromes such as spleen deficiency, qi deficiency, blood deficiency, yin deficiency and yang deficiency in traditional Chinese medicine.

The pH balance of body fluids is closely related to TCM. I think the acid-base balance is related to the theory of yin-yang balance in traditional Chinese medicine. Human blood is alkaline, but Zhu Danxi said that "Yang is always abundant and Yin is often insufficient". Cover alkali with yang and acid with yin. We can observe the patients with pulmonary heart disease or ventilation dysfunction in clinic and draw our own conclusions.