25 years old, very fit, heathly lifestyle, work with heavy metals - type 1 diagnosiss

I'm a very fit 25 year old male, cycle to work each day, eat sandwiches, fruit. Recently diagnosed with type one after thirst, blurry vision and fatigue. I work with nickel plated materials that can give 'dust' off when processed.

I do lots of mountain biking and golf.

Was 100% fit until 1 week ago... bit of a shock, but dealing okay. Just intrigued to understand what caused/triggered the condition. I believe in cause and effect even if it cant always be identified!