Weight gain is one of the signs of Type 2 diabetes. It happens due to insulin therapy, a common diabetes treatment. When insulin, which is responsible for absorbing glucose to produce energy, absorbs too much sugar from food during the procedure, the body converts it into fat. Excessive fat storage leads to weight gain. The problem with diabetic patients is that they have to be particular about what they eat. So, when it comes to shedding kilos and maintaining a healthy weight, they have to be extra cautious with their eating habits and diet as following an incorrect diet can worsen their symptoms.