In the early stages of diabetes, when blood sugar levels are not very high, it can be controlled through diet and exercise. This can be achieved by losing weight, reducing calorie intake, and increasing calorie consumption through exercise to lower blood sugar levels. However, for some obese patients or those who cannot control their diet, medications can also be used in the early stages to prevent further increases in blood sugar levels. Currently, medications such as metformin and acarbose, which are both effective and relatively inexpensive, are mainly recommended. (Specific medications should be taken under the guidance of a physician.)