Artificial sweeteners induce glucose intolerance by altering gut microbiota 2014 (nature.com)

Yes, it's old by academic standards. And do read the comments. Remember that getting something through peer review is not unlike a siege, but once within the fortress walls, a mighty army guards glamorous findings against high-profile refutation.

But in the interest of "balance" here it is.

Only saccharin is mentioned in the figures; did they only test saccharin and then generalize the result to all NAS?!