Why will a person get difficult and complicated diseases? According to the research findings of "Decipherment of The Body Constitution of Chronic Illnesses" and "Decipherment of The Body Constitution of Diabetes Mellitus," we find that when one's body constitution is deteriorating by 12 chronic illness stimulating factors. He may earlier get difficult and complicated diseases. When body constitution is deteriorating, one will be gradually losing his healthy function one by one. For example, he, who lost the ability to control blood glucose stably in normal range, may get diabetes mellitus. He, who lost the ability to control blood pressure stably in normal range, may get high tension. We have more than thousands functions of our healthy body constitution. When we were losing some healthy functions, then we may get difficult and complicated diseases. They are hardly cured, hardly controlled and changeable. The patient needs to take chemicals every day to loosen the symptoms. If we want to treat difficult and complicated diseases well, and recover from chronic illnesses. Anyway, the health will be improved, even be cured, by self regenerating & healing the damaged body constitution, if he adopted "the Eight Methods of Self Regeneration Therapy." We'll supply you more than 100 cases and pictures including ulcerated fingers for more than three years (case 024) and heart failure almost to death (case 069) etc. in this book. Although, the chronic illnesses are worsening to the worst stage, "the Eight Methods of Self Regeneration Therapy" could still improve the symptoms, patient's physical strength and the quality of daily life. So, SRT is very helpful to the patient himself and his family.