You being diabetic, here is a guy every diabetic should be familiar with and listen to. His entire career has been on researching and learning about insulin resistance, the precursor to type II diabetes. He not only does research himself but also stays up on the research of his peers on the subject. Dr Benjamin Bikman (PHD, not MD). Here is a new one I am listening to now.

Edit: for non-diabetics this might even be a more important message to listen to, if they don't want to eventually become diabetic.

https://www.youtube.com/watch?v=zhHxD7D9Qts&t=388s
Another one that came up after that I had not heard (though I have heard the message multiple times): 
https://www.youtube.com/watch?v=LsB95WzLhQM&t=626s

He has lots of interviews available for a person to learn from. Here is just a general search:

https://www.youtube.com/results?search_query=dr+benjamin+bikman+insulin+diabetes