What happens to a person with type 1 diabetes?

Many Possibilities: See my other answers on topic. Like all dx, this is only a label (if accurate) of a small set of issues. As always, your primary medical decision maker is yourself, no one else, & docs are primarily paid for disease, not health. Thus emphasize self-education & track the results of all your choices, as implemented, always focusing on excellence, not normality. Use the internet: carefully, wisely.