12 Myths About Insulin and Type 2 Diabetes
Insulin will make you gain weight
There’s some truth to this one. Some people with type 2 diabetes may gain weight after starting insulin therapy.
However, the insulin therapy itself does not induce weight gain. It’s because if a diabetes treatment is working, the body begins to process blood glucose more normally, and the result can be weight gain. (This is one reason unexplained weight loss can be an early symptom of diabetes.)
The good news is that this tends to level out as insulin therapy continues, and the weight gain may be transient, explains Dr. Crandall.