The Lab
Specimen No. 0070
AvoidNaturalfood additivethickener

Carrageenan

carrageenan · e407 · irish moss extract

Red seaweed-derived thickener. While "natural," research suggests it promotes intestinal inflammation and may be contaminated with degraded carrageenan (poligeenan), which is carcinogenic.

medium confidence
Researched April 18, 2026
Carrageenan molecular structure
Specimen 0070Carrageenan

Concerns

  • Promotes intestinal inflammation and increases intestinal permeability in animal and cell studies
  • Contamination with degraded carrageenan (poligeenan) — a definite carcinogen (IARC Group 2B for poligeenan)
  • National Organic Standards Board voted to remove it from certified organic foods (2012) — decision later reversed
  • Linked to worsening of IBD symptoms in some patients

Regulatory flags

  • ⚑EU removed degraded carrageenan from permitted food additives
  • ⚑NTP animal studies suggest intestinal inflammation at high doses

Commonly found in

Dairy alternativesInfant formulaDeli meatSalad dressingChocolate milk

Last researched: April 18, 2026

Research disclaimer: This rating is based on available peer-reviewed research and regulatory assessments at the time of publication. It is not medical advice. Consult a qualified professional for personal health or skin concerns.

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