Parabens (methyl / propyl / butyl)
Toxins · Preservative / weak estrogen
Low priority
What this is
Estrogenic potency is 1000-10,000x weaker than estradiol, but ubiquitous exposure matters. Darbre 2004 report of parabens in breast tumor tissue is often cited without noting it did not demonstrate causation. Moderate avoidance via label-reading is reasonable; obsession is not evidence-based.
Mechanism
Alkyl esters of p-hydroxybenzoic acid; preservatives in cosmetics, personal care, some foods; weak estrogen receptor agonists; longer-chain (propyl, butyl) more estrogenic than methyl/ethyl
Dose & route
Read labels; paraben-free options widely available; don't overreact to methyl/ethyl if single source
Citations
- https://pubmed.ncbi.nlm.nih.gov/15122636/
- https://pubmed.ncbi.nlm.nih.gov/28436150/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC6116881/
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This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.