What reflects the primary imbalance in Yang deficiency?

The primary imbalance in Yang deficiency is characterized by insufficient warmth in the body. In Traditional Chinese Medicine (TCM), Yang is associated with warmth, activity, and energy, governing processes like metabolism and circulation. When Yang is deficient, the body loses its ability to generate heat, which can manifest as coldness in various areas, decreased energy levels, and overall lethargy.

People with Yang deficiency often experience symptoms such as feeling cold, fatigue, low mood, and a tendency toward water retention. There may also be effects on digestion and metabolic processes, but the core issue lies in the lack of warmth, which is fundamental to Yang. This state of insufficient warmth can affect all physiological functions, leading to various symptoms that reflect a drop in Yang energy throughout the body. Therefore, recognizing that warmth is a central tenet of Yang's role highlights why this answer is the most appropriate in identifying the primary imbalance.