I shit a lot less since cutting down on diet coke.

I used to drink that a lot of diet cola and poo-ed daily with fairly large quantities. Like a medium/large carrot. The can does warn that overconsumption can cause diarrhoea (since the indigestible sugar draws water into your stools via osmosis), but this wasn't to that level, just large stools.

Lately I must be making super concentrated shit or something. I poo very little, and this is all I can pin it down to - not having artificial sugar bulking up my stool anymore. No feeling of constipation - just kinda empty.

That or my altered bowel habits are a sign of bowel cancer. But probably the coke.

You're welcome.