Literally the top of the 'treatment' section on WebMD:
> Managing type 2 diabetes includes a mix of lifestyle changes and medication. Lifestyle changes: You may be able to reach your target blood sugar levels with diet and exercise alone.
And the section on preventing type 2:
> Adopting a healthy lifestyle can help you lower your risk of diabetes.
> Lose weight. Dropping just 7% to 10% of your weight can cut your risk of type 2 diabetes in half.
> Get active. Thirty minutes of brisk walking a day will cut your risk by almost a third.
> Eat right. Avoid highly processed carbs, sugary drinks, and trans and saturated fats. Limit red and processed meats.
When he saw that I was losing weight and that my A1C was heading downward, he asked what I was doing. I told him about the carb restriction. He looked down, smiled, shook his head, and said nothing. That was the end of it.