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Lavender and Tea Tree Oil Block Male Hormones

Products containing lavender or tea tree oil may mimic estrogen and counteract androgens.
Lavender and Tea Tree Oil Block Male Hormones
Fresh lavender over wooden background. Summer floral background with lavender flowers and wood.

Q. I’m wondering if men should be using lavender. Many articles I’ve read state that lavender is a male hormone disruptor.

A. Lavender and tea tree oil were investigated as hormone disruptors when doctors noticed breast development in three little boys who had been using soap, shampoo, styling gel or lotion that contained lavender and, in one case, tea tree oil (New England Journal of Medicine, Feb. 1, 2007). An investigation of hormone activity found that both lavender and tea tree oil activate estrogen receptors much as estradiol does (Hormones, Jul-Sep., 2010).

In addition, both oils block male hormones, suggesting that you are right: it probably makes sense for men to be cautious about utilizing products containing lavender or tea tree oil.

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About the Author
Joe Graedon is a pharmacologist who has dedicated his career to making drug information understandable to consumers. His best-selling book, The People’s Pharmacy, was published in 1976 and led to a syndicated newspaper column, syndicated public radio show and web site. In 2006, Long Island University awarded him an honorary doctorate as “one of the country's leading drug experts for the consumer.” .
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