Lavender and tee tree oils display unwanted hormone activity

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Lavender and tee tree oils display unwanted hormone activity.

Cases have been reported of otherwise healthy 4, 7, and 10-year-old boys who

developed breast enlargement after applying skin-care products that

contained lavender or tea tree oils to their skin. One product was a

" healing balm. " The others included a gel, a shampoo, a soap, and a lotion.

The problem resolved shortly after use of the products was stopped. The

authors of the report also did cell-culture studies which found that both

oils have female (estrogen) and anti-male hormone properties that can cause

endocrine imbalance.

[Henley DV. Prepubertal gynecomastia linked to lavender and tea tree oils.

New England Journal of Medicine 356:479-485, 2007] HYPERLINK

" http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed & cmd=Retrieve & dopt=A

bstractPlus & list_uids=17267908 & query_hl=2 & itool=pubmed_docsum " http://www.ncb

i.nlm.nih.gov/entrez/query.fcgi?db=pubmed & cmd=Retrieve & dopt=AbstractPlus & lis

t_uids=17267908 & query_hl=2 & itool=pubmed_docsum

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