Acha or Fonio is a popular cereal consumed by the diabetics’ subjects and it contributes substantially to the total food intake of the diabetic subjects in Nigeria. It has become very expensive as the only major acceptable carbohydrate food and therefore it is necessary to determine its glycaemic index and load of Acha among the Type II diabetic and healthy control subjects. Ten volunteer Type II diabetics and seven healthy subjects consented for the metabolic studies. Fifty grams available carbohydrate of Acha (Digitaria exilis Stapf) meal and okra (Abelmoschus esculentus L Moench) soup was used as test food while 50 grams of glucose served as the reference food. The blood glucose responses were used to calculate the area under the blood glucose curve (AUC) to determine the glycaemic index of the meal. The percentage of carbohydrate in the meal multiplied by glycaemic index was equal to glycaemic load. The glycaemic index in Type II diabetics and healthy subjects were found to be 49 and 35 respectively.  The glycaemic load of Acha meal was 17.5 for control groups and 24.5 in Type II diabetic subjects.  The Glycaemic index (GI) of Acha meal is low in both Type II diabetics and healthy subjects.  The glycaemic load of the Acha (D exilis ) meal is just enough for control and high for the Type II diabetic subjects.  The GL could explain why despite the consumption of Acha by Type II diabetic their blood glucose could not be controlled because they regularly consume it in their homes more than the portion size served in this research. Therefore, it is necessary to adjust the quantity of Acha (D. exilis) meal consumed by diabetics’ subjects.