Dr. Hill, the Doterra medical director uses auto genesis to reverse the diabetic neuropathy, pain and tingling in the feet. Of course there are some oils that will with diet and exercise help in reversing the diabetic type. Now I'm not sure about type 1 because that is a pituitary problem not a diet exercise thing. Look up David Hill on Facebook, he can answer a lot better than I 'cause he's the one that developed or researched it.
The oils I use are by Doterra which means gift of the earth. They may be purchased on line through my website at http://www.doterra.com/KellySanders and you can purchase a booklet which tells you which oils and application type for over 250 issues by visiting http://www.builddoterra.com. Look up Rhonda Ford on here sh'es a personal friend of mine and my Doterra VIP gold supervisor.