摘要:Synthetic color is added to foods to replace natural color lost during processing. It is causes health problems mainly in children that considered Avery venerable group. This study was carried out investigate the effect of using color foods (Color fruit juice for 6 - 12 hr. Tomato ketchup potato chips (TKPC) color sweet and color chocolate at low (15%) and high (30%)) concentration on serum biochemical, WBC (white blood cell)and histopathology of liver and kidney of rats for 13 week. The results indicated that no significant change in body weight gain, serum glucose, HDL and LDL cholesterol. TKPC (30%) showed that significant increase in total cholesterol (TC), triacylglycerol (TG). Low and high concentration of color chocolate and color sweet was exhibited significant increase of TG. The level of ALT and AST was significant increase of rat’s administration color fruit juice (for 12 hr.) and TKPC at 30%. High concentration of color foods and long time administration of color fruit juice showed significant increase in serum creatinine and albumin compared to control group. Both low and high consumed of color foods exhibited significant decrease in liver GSH. High concentration of color foods lead to increase number of WBC as the result to the response of the immune system to the inflammation. Color foods were reveled change in histological structure of liver and kidney. In conclusion, the use synthetic color in various foods has adverse effect on some of biochemical analysis; and the liver and kidney histopathological structure.