Unfortunately for them, most people do not want to put in the effort. Watching friends and family destroy themselves is hard. Been there, doing that. But it is what it is and we have to chose our own paths.

This is a good doctor to listen to about the subject. Dr David Unwin.

https://www.youtube.com/results?search_query=dr+david+unwin+reverse+diabetes#mce_temp_url#

If a person is technically oriented and already involved in managing their diabetes I would recommend listening to researcher Benjamin Bikman. But his stuff is way deeper. For just a how to kind of information it doesn't get much better than Unwin.