Saliva, a bodily fluid that is familiar in daily life, holds greater importance and functionality than most people imagine. Saliva is not only a natural physiological response of the human body but also an indicator of health status. In traditional Chinese medicine theory, saliva is considered as the essence of the five Zang organs, closely related to the functions of the spleen and kidneys, rich in valuable components that promote health and longevity. Ancient medical experts even diagnosed diseases by observing the abundance or decline of saliva, viewing it as a treasure for health preservation.
The functions of saliva are extensive and profound. It aids in the initial digestion of food, converting starch into sweet maltose through amylase, effectively clearing food residues, maintaining oral hygiene, preventing bacterial infections, and reducing the occurrence of diseases such as gingivitis and oral ulcers. Components in saliva, such as lysozyme, possess natural antibacterial properties, capable of resisting various harmful bacteria and exerting anti-inflammatory effects. What is even more surprising is that modern research indicates saliva has a certain potential for anti-cancer effects, neutralizing free radicals generated by carcinogens and building a defense line for body health.
Furthermore, saliva demonstrates unique value in promoting wound healing, serving as a medical testing sample, and maintaining body acid-base balance. The “salivary gland hormone” it contains is believed to delay aging and enhance bodily functions. Hence, maintaining normal saliva secretion is of significant importance in enhancing quality of life and promoting health and longevity.
Anomalous changes in saliva, such as excessive or insufficient production, may be signals from the body. Excessive and viscous saliva with a bitter taste may indicate heat in the spleen; while increased salivation with a salty taste might be a manifestation of kidney deficiency. Excessive drooling during sleep at night is often related to overly spicy diets causing excessive internal heat. These conditions remind us to pay attention to the state of saliva, adjust lifestyle habits and dietary structures, seek medical advice when necessary, and greatly benefit overall physical and mental health.
In summary, saliva not only relates to subtle experiences in daily life but also serves as a bridge connecting the internal balance of the body with the external environment. Through a deeper understanding of saliva’s functions and variations, we can better listen to our body’s signals, take corresponding measures, and actively promote health.
