In the context of deficiencies, which one affects the heart, spleen, lung, and kidney?

The most comprehensive influence on the heart, spleen, lung, and kidney in the context of deficiencies relates to Qi. In Traditional Chinese Medicine (TCM), Qi is considered the vital life force or energy that flows through the body and is essential for the balance and functioning of all organ systems. When there is a deficiency in Qi, it can lead to a lack of energy and vitality, affecting the overall function of various organs including the heart, spleen, lung, and kidney.

Qi deficiency can manifest as symptoms affecting each of these organs in unique ways. For example, a weak kidney Qi may lead to fatigue and lower back pain, while a spleen Qi deficiency can result in digestive issues. Since Qi supports not just one organ system but the interconnectedness of all systems, this deficiency can create a ripple effect.

While blood, Yin, and Yang are also crucial elements in maintaining health, they are more specific in their effects. Blood deficiency typically leads to symptoms like paleness and dizziness, which while affecting the heart indirectly through a lack of nourishment, do not directly address the broader systemic impact seen with Qi deficiency. Yin deficiency is often associated with heat signs and imbalances, and Yang deficiency relates to coldness and lack of warmth in the body