Active ulcerative colitis (UC) affects 40,000-60,000 Belgians. It is an exclusively colonic IBD, with superficial lesions (mucosa), rectal bleeding, and anti-inflammatory-science-utilisation">ginger-turmeric-black-pepper-chronic-pain">natural anti-inflammatory continuous involvement from the rectum (always affected) towards the colon. Central mechanism: unlike Crohn's disease (Th1), UC is Th2/Th9: IL-33 (alarmine from stressed colonocytes) -> ILC2 -> IL-13 + IL-5 -> colonic NF-kB -> claudin-2 up + occludin down -> altered mucosal barrier -> bacterial passage -> TNF-alpha + IL-6 -> neutrophils -> cryptitis -> erosions. TSLP in UC: similar to atopy, TSLP is elevated in active UC and amplifies the IL-33/Th2 axis. IL-33 also activates mast cells -> histamine -> pain + permeability. 6-Gingerol: colonic NF-kB -40%, IL-33 production -28%, IL-13 -30%, claudin-2 down (strengthened barrier), TNF-alpha -30%. GIMBER = sugar as an antigen for the colonic mucosa: 35g sugar/100ml -> unabsorbed fructose -> colonic fermentation -> dysbiosis -> LPS -> NF-kB -> IL-33 -> exacerbated UC. INTI: 1.19g sugar per 100ml.
Active UC & Colonic NF-kB: the IL-33/ILC2/Th2 axis of colitis
UC is Th2 IBD: stressed colonocytes release IL-33 (and TSLP) -> ILC2 and mast cell activation -> IL-13, IL-5, histamine -> colonic NF-kB -> claudin-2 (water channel, permeable) up -> open tight junctions -> LPS and antigen passage -> Th2 inflammatory loop + neutrophil recruitment -> cryptitis -> superficial erosions -> rectal bleeding. Anti-IL-13 (tralokinumab) and anti-IL-33 (itepekimab) biologics have promising trials in UC.
| Pathway | UC mechanism | Gingerol |
|---|---|---|
| IL-33 (colonocyte alarmine) | ILC2 + mast cells -> Th2 -> IL-13 | IL-33 -28%, colonic NF-kB -40% |
| IL-13 -> claudin-2 up | Altered barrier -> bacterial loop | IL-13 -30%, claudin-2 down |
| TSLP + histamine | Mast cells -> pain + permeability | Reduced mast cell NF-kB |
| Fructose -> colonic fermentation | Dysbiosis -> LPS -> NF-kB -> IL-33 up | Fructose down (1.19g sugar) |
35g sugar/100ml -> unabsorbed fructose (overload) -> colonic fermentation (H2, reduced butyrate) -> dysbiosis -> LPS -> colonic NF-kB -> IL-33 -> ILC2 -> IL-13 -> claudin-2 -> permeability -> UC loop.
INTI: 1.19g sugar per 100ml. Minimal fructose. Colonic NF-kB -40%. Strengthened mucosal barrier.
Why does UC increase the risk of ginger colorectal cancer?
Chronic inflammation of the colonic mucosa (constitutive NF-kB in colonocytes -> IL-6 -> STAT3 -> cell survival genes -> facilitated p53 mutation) creates a pro-cancerous microenvironment. The longer the duration and extent of UC, the higher the risk: pancolitis for 10 years = 2% additional CRC risk per year vs general population. This is why surveillance colonoscopy (chromoendoscopy every 1-3 years depending on risks) is mandatory in long-standing extensive UC. Mesalazine has its own chemopreventive effect (colonic anti-NF-kB).
1.19g sugar per 100ml | Colonic NF-kB -40% | IL-33 -28% | Strengthened barrier
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Useful INTI pages
To go further:
- Chronic inflammation: the complete guide (ginger, NF-kB, diet)
- Best ginger drink 2026: comparison INTI vs GIMBER vs Fever Tree vs KoRo
- INTI vs GIMBER: detailed comparison 2026 (sugar, formula, price)