When I was first diagnosed in the sixties the dietician advised me to avoid spicy foods and in general I have done so. Obviously much of the early advice had changed over the years as nobody would now, for instance, advise unlimited cheese and butter. The spicy foods still puzzles me as I am unsure of its origination. What I do know is that spicy food does tend to put up my BG. Recently some friends invited me around and had some Indian food delivered. It was far too hot for me (spice not temperature) and despite not eating that much my BG was over 20 two hours later!
I am sure I did not eat that many carbs (small portion of rice) so why the massive rise in BG?