Overview
About High-fructose corn syrup
High-fructose corn syrup is a top FODMAP trigger precisely because it is everywhere: soda, sweetened drinks, sauces, cereals, bread and processed snacks.
It carries more fructose than glucose, so it delivers excess fructose in exactly the foods where you are least likely to notice it. For anyone with fructose malabsorption or IBS, HFCS is often the hidden reason a packaged food causes bloating and diarrhoea.
Sensitivities
How High-fructose corn syrup scores
Watch for
What trips people up
- High in excess fructose and rated a top overall FODMAP source, so it triggers bloating, gas and diarrhoea in fructose malabsorbers
- Hidden across processed foods and drinks, which makes accidental doses easy and hard to trace back to the culprit
- A poor fit for SIBO, DASH and Mediterranean eating, and pro-inflammatory as a refined added sugar
Diet fit
Where it fits
Swap ideas
More alternatives
FAQ
Common questions about High-fructose corn syrup
Is high-fructose corn syrup a FODMAP?
Yes. HFCS contains more fructose than glucose, so it delivers excess fructose, a core FODMAP. It is one of the highest-rated FODMAP sweeteners overall, which is why it commonly triggers bloating and diarrhoea in people with fructose malabsorption or IBS.
Where is HFCS hidden?
It turns up far beyond obvious sweets: fizzy and sports drinks, flavoured yoghurts, breakfast cereals, bread, ketchup, barbecue sauce, salad dressings and many packaged snacks. Checking labels for high-fructose corn syrup or glucose-fructose syrup is the fastest way to spot it.
Is HFCS worse than plain fructose or table sugar?
For the gut, the problem is the same excess fructose, and HFCS is rated among the highest FODMAP sweeteners. Its bigger issue is ubiquity: it appears in so many processed foods that the dose adds up quickly. A glucose-based or glucose-balanced sweetener is safer on this trigger.
References
Read the background
Ratings reflect the Triggerbites ingredient database and may vary with portion size and preparation.