The possible effects of 10% carbohydrate containting diets on the serum glucose and lipids values were studied with normal and alloxan - diabetic male rats for a period of 28 days. The diets were supplemented with either glucose, cornstarch or sucrose, fructose or the basal diet containing no added carbohy drates. After this period, 3 to 4 rats among the each group were killed and samples of serum, liver, spleen and kidney were collected. The others were rendered diabetic by the intraperitoneal injection of alloxan ($190mg/frac{wt}{kg}$). Then original feeding scedule was continued for 3 days in all five diabetic groups, before the collection of tissue samples and serum. Feeding the nondiabetic rats with glucose and fructose delayed the bodyweight development relatively compared with nonsugar group. The weight deductions after alloxan injection were similar in all feeding groups. All diabetic animals exhibited increased blood glucose triglceride levels but almost unchanged total cholesterol values. Blood glucose values for nondiabetic rats were normal ranges, and then glucose feeding group was the highest. Total - cholesterol values were the highest in nondiabetic rats fed glucose, fructose and in diabetics fed sucrose, glucose. Triglyceride values were the highest in nondiabetic rats fed sucrose, and no difference in diabetic rats. Some cornstarch group exhibited fatty-livers in diabetic and nondiabetic, and more studies need.