Regular check-ups and medication for diabetes (whether in tablet or injection form) definitely aren't the only way to control your blood sugar (glucose) levels. In fact, there is evidence that many people who lose weight and adopt a low-carbohydrate diet can control their blood sugar enough to be able to reduce or even stop their medication.
This is a companion discussion topic for the original article at https://patient.info/diabetes/type-2-diabetes/type-2-diabetes-diet