It is thought by some experts to be caused by a virus. The virus attacks the beta cells in the pancreas. I do believe that there usually is a genetic predisposition for this to happen, however.
Viral Link to Diabetes
I am 64 and was diagnosed with type 1 diabetes around 2014., after being misdiagnosed as a type 2 in 2011, I have been seen by the head of the Department of Endocrinology at University of Florida. The current theory is it's a virus that causes type 1. The reason they believe that is organ donors who had been type one for decades, who died unexpectedly had their pancreas donated to University of Florida. When they examined the pancreas they were surprised to find at least half the normal amount of insulin. That goes against their original theory that the type one person's pancreas does not produce sufficient insulin.
Also, there are case studies of a patient who was not diabetic undergoing surgery and an accident during injured the pancreas during surgery leaving them with only half of the normal amount of insulin production afterwards but they never develop diabetes.
Therefore the scientists understand that a person can live successfully with half of the normal insulin production and not become diabetic. They believe that this virus in the pancreas produces by products that interfere with a chemical reaction that is supposed to occur when there is sugar in the bloodstream that triggers the insulin to go into the bloodstream.
They believe that chemical reaction is not occurring. They are going to do studies to try to develop a drug to immobilize the byproduct of the virus. I asked why not just eradicate the virus in the pancreas. doctor explained there are no drugs capable of killing this virus.
However I know of a company that sells liquid minerals that has successfully treated otherwise incurable conditions like West Nile disease in horses. I believe they can come up with a protocol with their liquid minerals to eradicate the virus.
One I suspect would be to take a couple tablespoons of platinum produced by this company followed by a couple tablespoons five minutes later of their silver and do that two to three times a day for at least a couple months. I hope this helps