Now, let’s get serious for two seconds, because I love you. Blueberries are usually harmless, but there’s a big difference between berry-induced color and something that needs a doctor.
If your poop is bright red or looks like tar with a texture you’d rather not describe, please call your doctor. That’s not the berries—that’s a red flag (pun totally intended).
Black stool from blueberries is often more of a dark, greenish-black, not the sticky, pitch-black of internal bleeding. Trust your gut—literally and figuratively.
But okay, enough medical talk. Let’s get back to the fun stuff.