Anyone at risk of diabetes or dealing with diabetes should also look at research into the relationship between diabetes and inflammation, which suggests that there may be other factors to consider beyond just diet for how to best prevent and mitigate the condition.
There is also interesting research into how protein (muscle health) impacts insulin resistance:
Perhaps this is a good time to dig up an article which presents one mechanism I found interesting a few years back.
https://www.cell.com/cell/abstract/S0092-8674(14)01049-6
It turns out skeletal muscle is important as metabolic tissue, with implications for brain function among other things.
And this story from a few years back was a great read as well
https://news.ycombinator.com/item?id=8748147