I suppose we could do a nation-wide experiment by insisting that the sugar water vendors use only NSS for a year; but that would probably result in the overthrow of the government.
There's a lot he hasn't seen in this world. Doesn't mean those things don't happen.
In the USA a large size combo meal with a diet coke coming in at 1500+ calories is a meme based in reality.
NNSs trigger the same insulin/fat storage mechanism as sugar, but they arent absorbed, and stay on the blood longer, leading to insulin resistance.
And for lots of sodas, caffeine plays, too. It's hard to factor out the various issues that could also be present.
sucralose ingestion caused 1) a greater incremental increase in peak plasma glucose concentrations (4.2 ± 0.2 vs. 4.8 ± 0.3 mmol/L; P = 0.03), 2) a 20 ± 8% greater incremental increase in insulin area under the curve (AUC) (P < 0.03), 3) a 22 ± 7% greater peak insulin secretion rate (P < 0.02), 4) a 7 ± 4% decrease in insulin clearance (P = 0.04), and 5) a 23 ± 20% decrease in SI (P = 0.01).
https://diabetesjournals.org/care/article/36/9/2530/37872/Su...