Yang deficiency generally refers to insufficient yang qi in the body, resulting in weakened body functions, decreased immune system, and a phenomenon of insufficient yang heat. Yin deficiency, on the other hand, refers to insufficient body fluids that cannot effectively nourish the body and restrain yang qi, leading to a series of pathological changes.
The distinction between yang deficiency and yin deficiency is mainly determined by observing their symptoms. People with yang deficiency tend to feel cold, with cold limbs, while those with yin deficiency tend to feel hot, experiencing internal heat and restlessness.
People with yang deficiency often have a decrease in digestive function, with food being excreted relatively undigested rather than as feces. They may also experience mental fatigue and physical weakness. In contrast, people with yin deficiency tend to have abundant energy, are active, generally more excited, and have poor self-control.
For individuals with yang deficiency, the tongue may appear pale, thickened, and may have teeth marks. The pulse is often deep, thin, and weak. In contrast, individuals with yin deficiency may have a red tongue with less coating, and the pulse is similar to yang deficiency, generally weak.
When dealing with yang deficiency, improvement can be achieved through dietary adjustments. For example, it is recommended to consume more lamb, milk, goose meat, shrimp, eel, leeks, garlic, coix seed, Chinese yam, and red dates. For yin deficiency, it is advisable to consume foods that can clear away heat and avoid spicy and strongly aromatic foods to prevent exacerbating the condition.
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