The first thing to understand when it comes to treating diabetes is your blood glucose level, which is just what it sounds like — the amount of glucose in the blood. Glucose is a sugar that comes from the foods we eat and also is formed and stored inside the body. It's the main source of energy for the cells of the body, and is carried to them through the blood. Glucose gets into the cells with the help of the hormone insulin.
Even if you aim to lose 5% of your body weight, if overweight, you are likely to see a fall in your blood glucose levels back into the normal range but even then we can’t say diabetes has been reversed or gone away. These actions build-up the body’s ability to respond to rising levels but if you get sick, eat more carbohydrate or gain some weight, more than likely your blood glucose levels will be on the rise again into the diabetes range.
Note that these medications used to treat type 2 diabetes are typically not used in pregnant or breastfeeding women. At present the only recommended way of controlling diabetes in women who are pregnant or breastfeeding is by diet, exercise, and insulin therapy. You should speak with your health-care professional if you are taking these medications, are considering becoming pregnant, or if you have become pregnant while taking these medications.