I was diagnosed at age 55. I maintained a fairly normal glucose range for 9 more years strictly through diet and exercise. My diet basically consists of avoiding just about all carbohydrates except for those that occur naturally in low-glycemic vegetables. Veggies and meat/fish/poultry/egg/soy protein are basically the safe foods that control blood sugar and allow weight loss for many Type II diabetics.
In the past several months my blood sugar finally became harder to control (this is usually a progressive illness as the pancreas gradually gets exhausted from over-producing insulin), and now I'm taking a low dose of metformin daily. There are some risks, as with any medication including aspirin, but the risk is far less dangerous than uncontrolled diabetes, which causes a whole range of harmful effects in the body and often leads to early death.
I do take several supplements that are believed to help the body control glucose, including chromium, cinnamon, banaba extract and a couple of others. These may help people in the very earliest stages, but they do NOT significantly lower my glucose. I still need the metformin, which helps my body use the insulin I produce more effectively (lowers insulin resistance). And I still need a very careful diet and exercise.
There are some studies that suggest that high doses of insulin are toxic to the body and cause long-term damage, and I hope to stay off insulin for a few more years. All the research I've done shows that metformin is a safer treatment for as long as it works. I also had the wonderful side effects from metformin of having more energy, less hunger, and it seemed to help me lose a bit of weight that had just been sticking to me no matter how little I ate. Plus, it's inexpensive.
So before you reject it, I hope you'll do some careful research. There's plenty of information online.