I believe it is entirely possible...i have healed from what the doctors called "hereditary" with "no cure" called Ehlers Danlos Syndrome. Genetics are not as concrete as science has had us believe in the past. We can turn gene expression on and off using energy mastery and a holistic approach to life Check out Epigenetics... And a book called The Genie in Your Genes by Dawson Church.
Energy medicine has been resolving serious illness for a long time...we have just reawakened to our own divinity and going capabilities. You can heal your diabetes...but first find a way to believe it is possible! Good luck.