Abstract
Incurable diseases such as liver fibrosis is the major targets of fuzzy set chaos theory for controlling pathological histology. For the first step, the vitamins would be prescribed to regulate extracellular matrix gene expressions. The concentration of serum vitamins complicated by daily sports and food eaten, therefor the fuzzy set vitamin levels will regulate actual gene expressions. Repeating process of cycling once in a 7 days intervals with serially medicated, serum vitamin levels depict chaos rounding irregularly in short duration but with a regularity it set cycling concentration of vitamin levels in a half year duration.