About a hour letting me know it’s that time. But I don’t like doing that at work so I was trying my best to make it go away.
I doubt you’re eating anything unique at McDonalds. This could all be in your head, you may be remembering the first time you had this reaction to McDs food, possibly you are even seeking this reaction subconsciously. Since you keep going to McDonalds and eating the same food anyway it seems quite plausible that you are actually seeking and fulfilling some urge.
What happened was a coworker said she was going out to lunch and I asked her where that’s when she said Wendy’s or McDonald’s. I was expecting her to come back with Wendy’s but she had a McDonald’s bag when she came back.
So it was a unexpected meal from McDonald’s
Do you mean the first time?
I agree - everyone seems to want to discover that some fast food chain or other is doing horrific, Lovecraftian evil to the food they serve (I recall for example, myths about McDs farming worms for their burgers, and KFC breeding spherical, headless, boneless chickens that could just be sliced directly into boneless fillets)
In actual fact, the horror is just: It’s made in huge bulk from cheap ingredients, and those criteria (cheap/bulk) are significant driving forces in the industry. Sure, it contains ingredients that might surprise you (sugar in the buns, salt in the milkshakes - whatever), but there’s generally nothing extraordinarily weird in there, because typically, ‘extraordinarily weird’ = expensive and difficult to produce in bulk.
You might be sensitive to the anti-foaming agent added to the fryer oil (you won’t find this in canola or peanut or whatever oil you buy at the grocery). It’s usually dimethylpolysiloxane. This is the active ingredient in Gas-X, which (contrary to what some might think) makes you pass gas more rapidly. In some people, increased flatulence=increased overall gut motility. 
This is probably present in fryer oil at, say Arby’s, as well as McDonald’s, but you’re getting a double whammy if you are eating both fried chicken nuggets (which are little grease sponges anyway) and french fries in one sitting, as opposed to a sandwich and a few curly fries. Now, the FDA regs I’ve cited below give the acceptable quantities of the substance in PPM–I don’t know how much smaller it is compared to a therapeutic dose in mg. However, this is basically a mechanical effect we’re talking about here, so it’s plausible that a smaller dose is sufficient to do its duty in your GI tract. Ask me about the time I accidentally ingested a few drops of mineral oil… :o
(My husband has bad IBS so I’m used to looking out for things like this; I’m not a food police kind of guy.)
Anti-foaming oil in McDonald’s
:groan:
An easy slam, but price and GI sensitivity aren’t particularly related. McDonald’s doesn’t screw up my gut, neither does Wendy’s or numerous other fast food restaurants - but the two occasions I ate at an In-N-Out both afflicted me with acute and severe diarrhea shortly after each meal.
I’m going to suggest this one weird trick:
Stop eating at McDonalds.
I’m not sure I understand
I find if I eat a particular food type after not having eaten it for a while, things get “unsettled.” For example, there have been times where I’ve been traveling, extremely busy, or just at the mercy of the food available, and subsisted for a while on junky food like pizza, burgers, etc. then if I get back to routine and have a sizable salad (with real greens) the first one is likely to run straight through me. Probably the sudden fiber/water intake.
Yes I think that was my last meal from there this year.
In-N-Out is inexpensive, too, but I suspect the problem for you with them is that they do use a very high percentage fat ground beef (Serious Eats estimates as high as 60-40), so that may be your problem there.
I eat at McDonald’s with fair regularity (at least once a month) and never had an issue, though I’m not usually a chicken nuggets & fries guy.
The only chain I’ve ever experienced some discomfort from is White Castle’s (although I still regularly eat from them), but I chalk those experiences up to having a belly full of beer and the onions in those burgers. And, in my inebriated state, consuming more than I normally would. You do not want to be around me after that combination. Eaten during more sober parts of the day, I have not had the issue.
I will say that I eat from McDonald’s regularly and don’t have the OP’s issue. However, give me a Baconater from Wendy’s and it’s a different story. Also, fried chicken. :eek:
Are we missing something positive here? One could make the case that Quarter Pounders are keeping one’s colon healthy and functioning.
Was the first time you ate McDonalds food the unexpected meal? If not I have no idea why you mentioned that.
Nice answer!
Since this involves medical advice, let’s move it to IMHO.
Colibri
General Questions Moderator
No I was saying I assumed she was going to Wendy’s but she came back with McDonald’s which made the meal unexpected but i ate it anyway.
Ok, I guess you’re saying that was the last time you ate McDs. It probably doesn’t matter what the cause is anyway. I think someone already suggested antacids, maybe you’ve got some general digestive troubles that you only notice are a problem after eating the particular cheap garbage McDonalds serves, so focusing on the problem instead of the source might be what you need to in that case. But if it’s just McDs then not eating there is the simplest solution to your problem.