Can chromium reduce need for diabetic drugs?

I have received numerous emails from people that suggest that chromium might be useful in lowering the dosage of drugs used to treat diabetes. This is not proven, but it certainly is an interesting area for research.
I'm pleased to read that the person is studying this matter with the help of her physician. I would never recommend otherwise.
Here is the letter:

Dear Dr McLeod

Thanks to chromium picolinate (600 ug daily) my mood so well improved. As well as my diabetes 2: Now I am taking only half dose of my oral anti diabetic drug ( Metformin + pioglitazone) under supervision of my physician. And my fasting blood sugar is better than before !. Thank you for all you have discovered.

I am looking forward to your next book.

Best regards
C. A.
France