@BeyondtheRainbow - I had a colonscopy and endoscopy before...It happened when I got severely anemic with pica with no obvious cause, so the GI doc did those along with the barium swallow to rule out GI issues. No cause was ever found for the anemia, and other doctors tested all sorts of other stuff. I had to get iron infusions a couple of times that year & the following year, but after that while I've had borderline low iron, I've never been that badly anemic again. I'm having an endoscopy as well this time since I've had some issues with swallowing, just to be sure the hiatal hernia hasn't worsened or something else isn't going on. This time the colonscopy is because the GI doc had noted he wanted the next one done in 5 years, and it's been that now.