High-fructose corn syrup
Sweetener
CardiovascularMetabolic
Description
High-fructose corn syrup (HFCS) is a sweetener made from corn starch that contains ~42–55% fructose. It is used in sodas (HFCS-55) and processed foods like baked goods and sauces (HFCS-42). The FDA considers HFCS generally safe and nutritionally equivalent to sucrose. However, like all added sugars, large amounts of HFCS can lead to weight gain, fatty liver, type 2 diabetes and heart disease. Health guidelines advise limiting HFCS and other added sugars to promote metabolic health.
Learn More Dossier
Aliases / Common Names: High-fructose corn syrup; glucose–fructose syrup; isoglucose; high-levulose corn syrup; corn syrup (high-fructose).
Regulatory Status & Exposure: HFCS is affirmed as GRAS by the FDA (21 CFR §184.1866) with no specific use limits beyond good manufacturing practice. It is treated like other sugars (no established ADI). The WHO’s 2015 guidelines and US Dietary Guidelines recommend that free or added sugars (including HFCS) be limited to <10% of daily calories. In the EU, HFCS (called “isoglucose”) has no unique bans; policy focuses on lowering total sugar intake. Typical HFCS exposure: one 12-oz soda provides ~10 tsp of HFCS (~40 g, ~160 kcal). A 2004 analysis estimated US intake ~132 kcal/day from HFCS on average, with the top 20% consuming ~316 kcal/day.
Technical Evidence: Fructose (the main component of HFCS) is metabolized largely in the liver, promoting new fat synthesis and raising triglycerides. It also blunts insulin and leptin responses to meals, which may reduce satiety. Controlled trials show that swapping fructose (or HFCS) for other carbs at equal calories does not harm liver fat in healthy people; but consuming extra calories from fructose (e.g. sugary drinks) increases liver fat and ALT levels. In practice, most studies indicate that HFCS has similar metabolic effects as sucrose or other added sugars. A recent systematic review noted HFCS as a cited risk factor for obesity and metabolic syndrome, but found only one human trial focused on HFCS specifically. Overall, evidence points to HFCS driving metabolic risk via overconsumption of calories rather than any unique toxicity.
Fast-Food Context: HFCS-55 sweetens soft drinks and fruit drinks; HFCS-42 is common in processed snacks, condiments and baked goods. Its liquid form, stability and low cost make it ubiquitous in fast food. Like other frying/syrup oils, HFCS can degrade if overheated, but typical fast-food heating doesn’t alter sugar much. The main issue is repeated consumption of HFCS-laden items (sodas, sauces, dessert toppings). Industry often does not distinguish HFCS on labels from “corn syrup” in syrups or honey analogs.
Sensitive Populations / Notes: People with or at risk for obesity, diabetes, gout or liver disease are advised to especially limit HFCS and added sugars. Children and teens are a key concern, as sugary drinks can exceed recommended sugar limits. Rare fructose intolerance disorders (e.g. hereditary fructose intolerance) are not a general food-safety concern in the population.
Regulatory status
Canada
Allowed
Ingredient naming requirements: isomerized glucose syrups not more than 60% fructose (dry basis) are labeled 'glucose-fructose'; >60% fructose labeled 'fructose syrup'.
Basis: Other
Source
International
Restricted
international food standards product standard provides category-specific conditions for when sugar syrups (incl. isoglucose/high fructose syrup) may be added (e.g., fruit juice from concentrate and nectars).
Basis: Other
Source
European Union
Allowed
HFCS-equivalent syrups are treated as sugar syrups/ingredients; naming rules apply (e.g., glucose-fructose syrup when fructose >5% dry matter).
Basis: Other
Source
Japan
Allowed
Japan recognizes and sets requirements for high fructose syrup in applicable standards rather than banning it as a category.
Basis: Other
Effective: 2024-09-18
Source
United Kingdom
Allowed
Reserved descriptions/labeling rules for sugar products including glucose syrups containing fructose (glucose-fructose / fructose-glucose terminology).
Basis: Other
Effective: 2003-06-12
Source
United States
Allowed
Food for human consumption (direct food substance); no limitation other than current good manufacturing practice.
Basis: 21 CFR 184.1866
Source
Registry review date: 2026-02-25
State policy updates
California (US)
Not Applicable
AB 418 prohibits four listed substances in food products beginning 2027; HFCS is not listed by name or CAS in §109025.
Effective: 2027-01-01
Compliance: 2027-01-01
Source
Policy timeline
-
1996-08-23 — FDA final rule affirming HFCS as GRAS (referenced in CFR history)
(United States)
-
2026-01-07 — Dietary Guidelines for Americans, 2025–2030 released (policy guidance; not an additive authorization)
(United States)
Research Evidence Snapshot
Evidence indicates that high intake of added sugars, especially sugar-sweetened beverages, is associated with adverse metabolic outcomes; HFCS is not consistently more harmful than sucrose under isoenergetic conditions, suggesting risk is driven mainly by dose and dietary pattern.
Critical endpoints: Liver fat/NAFLD markers; dyslipidemia/uric acid with high-dose HFCS beverages; dental caries; GI intolerance in susceptible individuals.
ACUTE SENSITIVITY HAZARD
Confidence: Medium
Low
Not a typical allergen/toxicant, but can trigger GI symptoms in fructose malabsorption; must be avoided in hereditary fructose intolerance.
CHRONIC HEALTH EVIDENCE DIRECTION
Confidence: Medium
Likely harmful
Harm signals track with high added-sugar intake patterns (especially SSBs and excess energy). Isoenergetic HFCS vs sucrose differences are generally small in meta-analyses, implying dose/pattern dependence rather than uniquely HFCS-specific toxicity.
EVIDENCE STRENGTH
Confidence: Medium
Moderate
Good human evidence for fructose-containing sugars and SSB patterns; fewer decisive HFCS-specific exposure studies in restaurant contexts.
REGULATORY POSTURE (U.S.)
Confidence: High
Authorized/Permitted
Affirmed GRAS under 21 CFR 184.1866; used under GMP.
REGULATORY DIVERGENCE
Confidence: Medium
Low
Major jurisdictions generally permit HFCS-equivalent syrups as ingredients with naming rules rather than bans.
HEALTH-BASED GUIDANCE AVAILABILITY
Confidence: High
Not applicable
ADI/TDI frameworks are not typically used for caloric sweeteners; guidance is via dietary recommendations on added/free sugars.
EXPOSURE CERTAINTY
Confidence: High
Low
Ingredient lists confirm presence but not dose; restaurant labeling provides sugars but not added sugars; HFCS is not distinguished from other added sugars.
DATA RECENCY & STABILITY
Confidence: Medium
Evolving
Exposure and guidance are changing (dietary guidelines language, trend declines in HFCS availability, ongoing industry reformulation).
Health guidance & exposure
- ADI — N/A: Not specified (Not established / not applicable for caloric sweeteners)
Agency exposure estimates
- USDA ERS — United States (per-capita availability estimate; 2021): 39.5 lb/person/year (loss-adjusted availability)
- CDC (NHANES-based summary) — U.S. adults (2017–2018); not HFCS-specific: 17 teaspoons/day (all added sugars; proxy)
Restaurant/fast-food HFCS amounts are not routinely disclosed; packaged-food labels list added sugars but not HFCS-specific grams.
Data gaps
- HFCS grams per serving in most restaurant foods are not publicly disclosed.
- Restaurant menu labeling does not require 'Added Sugars (g)'; only 'Sugars (g)' is required in written nutrition information.
- HFCS vs sucrose attribution is generally not possible from nutrition labels alone.
Found in these Restaurants
We found this ingredient in menu items at the following chains:
Methodology
We assign the Moderate Concern tier using published research, regulatory guidance, and PRūF’s additive taxonomy. Restaurant usage is derived from public ingredient disclosures and mapped to menu items where this additive appears.
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Related questions and pages
Regulatory context
Learn how this additive is treated across different regulatory frameworks and why mixture effects can matter.
Scientific Sources & References
About this Audit
Data sourced from publicly available nutrition guides and ingredient lists as of 2026-03-04. Percentages represent the frequency of an ingredient's appearance across standard menu items, not the quantity within a specific item. Regional availability and supplier formulations may vary.
PRūF is an independent educational tool and is not affiliated with, endorsed by, or connected to any restaurant chain mentioned. All trademarks belong to their respective owners.
