Ah, the diet versions. You’d think removing the sugar would solve everything, right? Wrong. Artificial sweeteners like aspartame and acesulfame potassium are the real tricksters here. Your body doesn’t fully absorb them, so they ferment in your gut like a science experiment gone wrong.
I have a buddy who switched to Diet Dr Pepper to “be healthier.” He spent the next three days feeling like a human air horn. He said it felt like his stomach was moonlighting as a bubble machine. That’s the gas and bloating talking—and sometimes, diarrhea follows.
Dr Pepper: The Poop-Inducing Soda Mystery | ShunKeto
For some people, these sweeteners act like a laxative, especially if you’re sensitive to them. It’s not a guarantee, but it’s a very real possibility. You might be sipping a “zero” drink and getting a “heroic” amount of bathroom time.
The Acid Factor
Dr Pepper is acidic, with a pH around 2.9. That’s close to stomach acid levels. While your stomach can handle it, your intestines might not appreciate the sudden acid bath. It can irritate the lining, especially if you have a sensitive gut or conditions like IBS.
Imagine pouring a can of battery-flavored soda into a perfectly balanced ecosystem. Your intestines are like, “Hey, I was having a good day!” and then they retaliate by speeding everything up. That’s basically diarrhea in a nutshell: the express checkout lane for your dinner.
So, is it the acid? Maybe. But it’s rarely one thing. It’s usually a beautiful, chaotic combo of caffeine, sugar, sweeteners, and acidity that turns your gut into a liability.
