Understanding the Ren Shen Tree in Historical Context When analyzing the Ren Shen Tree, it is important to recognize that it was not one of the primary constitutions described during the Shang Han Lun (伤寒论, 220 CE) era. This could be due to various speculative reasons, such as the fact that fatigue and digestive weakness may not have been as commonly expressed or recognized in the same way they are today. Reality has significantly changed since then, particularly around 1107 CE, when the Pi Wei Lun (脾胃论) was written by Li Dongyuan (李东垣), emphasizing spleen and stomach weakness as a primary focus of treatment.

Over the last 50 to 100 years, the physical characteristics of the Ren Shen Tree have evolved significantly. While human physiology remains constant, lifestyle factors have drastically shifted. Unlike in the past, modern individuals tend to be sedentary, with minimal physical labor. Even those who engage in exercise typically do so for only an hour a day on average. This lack of movement weakens core muscles, leading to structural imbalances that manifest earlier than in previous generations. Such physical changes contribute to fatigue, which in turn drives an increased consumption of carbohydrates and sweets.

Consequently, modern Ren Shen Tree individuals often present with weight gain, particularly in the abdominal area. This additional weight places further strain on the muscles, particularly the power muscles (sugar muscles), while softer muscles are less engaged due to decreased physical activity. The excessive intake of simple carbohydrates and sweets fosters the fermentation of problematic gut bacteria, further weakening digestive function and exacerbating spleen deficiency.

As mentioned, the reality of these individuals has changed over time. Their proportion in the population has increased, and their physical traits have given rise to more common psychological manifestations, such as depression.

Comparative Understanding of the Ren Shen Tree To fully grasp Ren Shen Tree individuals, they should be compared to similar constitutions. In general, they exhibit fatigue and digestive weakness but also tend to maintain an optimistic outlook. They respond well to exercise, with relatively quick physical improvements, depending on age and pathological state.

This subject falls under the broader category of body typologies as established in the Shang Han Lun (伤寒论) under Jing Fang classifications. A deep understanding of these types allows for precise diagnosis and treatment, particularly in herbal prescriptions. Additionally, it helps refine acupuncture protocols and provides guidance on nutrition and physical activity. For instance, Ren Shen Tree individuals benefit more from strength training rather than running, as building muscle mass aids in weight loss and energy regulation.

This topic is covered in-depth in the Advanced Diagnosis Course, Parts A and B.

Recommended Formulas Based on the clinical picture, the following formulas are suitable:

Conclusion The Ren Shen Tree is used to understand patients with Qi and digestive weakness. Treatment focuses on strengthening the Spleen, supporting Qi energy, and improving digestion and absorption. The appropriate use of herbal formulas helps alleviate symptoms and enhance patient vitality, following the dynamic approach of Jing Fang.