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Triclosan vs Recombinant Bovine Somatotropin: which is worse?

Quick answer: Triclosan carries the heavier risk profile. Triclosan is restricted in the EU and allowed in the US; Recombinant Bovine Somatotropin is in the EU and in the US.

PropertyTriclosanRecombinant Bovine Somatotropin
EU statusRestricted
US statusAllowed
Risk levelhigh
Banned inEuropean Union, Canada, Japan, Australia, New Zealand
Restricted inEuropean Union
Categoryendocrine disruptoradditive
Where it hidesantibacterial soap, toothpaste, deodorant

What is Triclosan?

Triclosan is an antibacterial and antifungal agent.

What is Recombinant Bovine Somatotropin?

Recombinant bovine somatotropin (rBST) is the synthetic version of bovine growth hormone (BST), naturally produced by the pituitary gland in cattle. The recombinant version is produced using genetically engineered bacteria and is injected into dairy cows to increase milk production by 10-15%. Brand name: Posilac.

Documented risks

Triclosan: An endocrine disruptor linked to antibiotic resistance. Restricted in the EU and banned in US over-the-counter antibacterial soaps, but still allowed in some products.

Recombinant Bovine Somatotropin: See recombinant-bovine-growth-hormone-rbgh for full detail. Key concerns: rBST elevates IGF-1 in milk; elevated blood IGF-1 is associated with breast, prostate, and colorectal cancer risk in epidemiological studies. Animal welfare: increased mastitis (up to 25-50% higher rates), lameness, and antibiotic use. The Codex Alimentarius Commission declined to endorse rBST safety MRLs in a historic 33-29 vote. Health Canada rejected rBST approval in 1999 after finding it caused significant animal health problems requiring increased antibiotic use.

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