Scientists have experimented using stem cell transplants on a small group of young type 1 diabetes sufferers. There were side-effects from the drugs.

Stem cell study offers hope for diabetics - Guardian

Extract:

"Scientists have managed through stem cell transplants to free a small group of diabetics from their dependence on insulin injections, they report today.

The experiment suggests that type 1 diabetes, which is genetic, unlike obesity-related type 2, could one day be prevented or reversed, according to the Journal of the American Medical Association.

However, the study was very small, 15 young patients diagnosed less than six weeks before the start of treatment; they also all had side-effects related to the drugs they had to take."

Caution is needed here, I reckon. - Drug side-effects have been disastrous for many victims of prescribed drugs over the years. I hope that there will be extremely careful monitoring of these young guinea-pig patients.