I tend to eat a lot of spicier foods where I live (and it's chili-roasting season anyway). I can say, as an n=1 study only, that eating spicy foods does not lower my insulin requirements and, as someone with gastroparesis, it can cause stomach upset, especially pared with high fat food. It tastes sooo good though! I'd rather have some roasted green chili in my breakfast burrito or homemade chicken enchiladas than not. I think that this would also depend on how 'processed' the spicy foods are. Think about it, you aren't going to get the same levels of Vit C from some canned jalapenos or red chili sauce that you will from using some fresh peppers. I dunno, I'm a bit skeptic, I guess I'd like to see the data which they drew the conclusion from.