I have not read the other replies - but for me I would say... (i found out from my mom who got the call from the doc so telling family was easy)..I would say it as it comes up- like oh I have started looking at some new ways to eat becuz i found out... or next holiday state - well when we come over not ice cream cake for me becuz the doc says with T1 i gotta limit my carbs...
this is how I tell friends now days - I dont sit them down and have the I got T1 talk - its just a part of me - it does not define me
Looking at your headshot you appear to be reasonably close to a good weight. Therefor I say you must be doing a lot of things right. A personal history of good health choices will make it way easier to deal with this disease. Keep it up. And lets all keep fighting to get this disease cured.