My husband's pre-diabetes, turned into Type II when he got heavy. And it did reverse when he lost weight.
I am overweight, because of prednisone, and the difficulty of keeping active when my RA is flared. It drives him nuts my blood sugar, even after eating a treat, is always around 5.2.
My dad had a thing about sugar. Any kind of sugar. He loved it! He was active, but my mom threatened him if he didn't stop eating so much sugar, he would get diabetes. Well, he never did, died of congestive heart failure, from amylodosis. Probably auto-immune. I must take after him, with all my auto-immune diseases.
One thing that health issues has given me, is that it is a bridge to meet non-Christians, and relate to them. It opens doors to share Jesus. So, I have never closed the door on meeting people in person and on-line with similar diseases. I go to church for fellowship, and I have some good friends here. There is one lady at church with RA, and occasionally we talk about it, but more often we talk about music, because we are both musicians.
Getting sick is not fun! But, God can truly use it for good! And that means be able to meet and share the gospel with people who have the same disease, sometimes!