| Very few of us will ever know what caused it.
I’ve read lots of theories , several sound plausible.I'm sure we tend to grasp at what fits in with our own histories.
I had hepatitis A as a child, one (really obscure) study showed that an epedemic of Hep A in a remote African tribe resulted in some immediate cases of diabetes but also instances of it developing some years later. Well mine was many years later, but perhaps it fits.
Another study suggested frequent low grade infections by the coxsackie (hand foot and mouth) virus could result in a series of minor auto immune attacks with a gradual loss and subsequent partial regeneration of beta cells. When the net loss was too great the result was type 1. As a primary school teacher I must have encountered that virus frequently, perhaps that was the reason.
One doctor has suggested stress. Maybe he was right though I think the stress symptoms were caused by undiagnosed high BS.
Who knows? | 
