Lavender and tea tree oils may cause breast growth in boys

A study published in this week's issue of the New England Journal of Medicine suggests that repeated topical use of products containing lavender oil and/or tea tree oil may cause prepubertal gynecomastia, a rare condition resulting in enlarged breast tissue in boys prior to puberty, and for which a cause is seldom identified.

Researchers at the National Institute of Environmental Health Sciences (NIEHS), part of the National Institutes of Health (NIH), confirmed in laboratory studies what a pediatric endocrinologist at the University of Colorado at Denver and Health Science Center's School of Medicine suspected after diagnosing three of his young male patients with prepubertal gynecomastia. The researchers found an association between the use of products containing these oils and the rare disorder, but cautioned more research is needed. At this point, the findings are only applicable to young males with unexplainable enlarged breasts who are regularly using products containing these essential oils.

"We want to encourage doctors who may be seeing patients with gynecomastia to ask their patients about the products they are using. Patients with prepubertal gynecomastia may want to consider reducing the use of products that contain these oils," said Ken Korach, Ph.D., chief, Laboratory Reproductive and Developmental Toxicology at NIEHS and author on the study. "Although we found an association between exposure to these essential oils and gynecomastia, further research is needed to determine the prevalence of prepubertal gynecomastia in boys using products containing lavender and tea tree oils. Results of such epidemiological studies are important to tell us how strong the association is between topical application of the oils and prepubertal gynecomastia"

The three otherwise healthy Caucasian boys, ages four, seven and 10 years, had normal hormonal levels when they were diagnosed with gynecomastia by Clifford Bloch, M.D., in Colo

Contact: Robin Mackar
NIH/National Institute of Environmental Health Sciences

Page: 1 2 3

Related biology news :

1. Study begins to reveal clues to the cause and progression of sepsis
2. Pollution causes 40 percent of deaths worldwide, study finds
3. deCODE discovers cause of major subtype of glaucoma
4. Inflammation may cause preterm labor and fetal deaths
5. Pregnant mothers join search for causes of autism
6. Marijuana component opens the door for virus that causes Kaposis sarcoma
7. U-M researchers find family of on switches that cause prostate cancer
8. Cell damage caused by brushing may help keep gums healthy
9. Seawater intrusion is the first cause of contamination of coastal aquifers
10. CRESIB coordinates an international consortium to fight malaria caused by Plasmodium vivax
11. Study examines cause of hearing loss for patients with certain genetic disease

Post Your Comments:
TAG: Lavender and tea tree oils may cause breast growth boys

(Date:10/5/2015)... -- http://soundview.co ) releases the ... NXTD ), a biometric authentication company focused on ... ) releases the following market and company ... biometric authentication company focused on the growing mobile commerce ... ) releases the following market and company ...
(Date:9/30/2015)... , Sept. 30, 2015  The global glucose monitoring device ... 2015. So says a new report on the industry from ... segment dominate the market, followed by continuous glucose monitoring and ... on the market for these products in its latest report, ... , ...
(Date:9/28/2015)... 28, 2015 The global ... USD 12.03 billion by 2020, growing at a CAGR ... as Backside Illumination (BSI) technique to improve picture quality ... period.      (Logo: http://photos.prnewswire.com/prnh/20150105/723757) , ... to reduce loss and, thus, reduce the noise interference ...
Breaking Biology News(10 mins):
(Date:10/8/2015)... BALTIMORE, Maryland , October 8, 2015 /PRNewswire/ ... http://www.GoldmanResearch.com .   --> Goldman ... specializing in the small cap and microcap sectors, ... sponsored research report on PharmaCyte Biotech, Inc. (OTCQB ... company focused on developing and preparing treatments for ...
(Date:10/8/2015)... 8, 2015  The ALS Association, in partnership with ... Challenge to revolutionize communication technology solutions for people living ... ALS (amyotrophic lateral sclerosis) is a progressive neurodegenerative ... and the spinal cord. Eventually, people with ALS lose ... often leads to total paralysis and death within two ...
(Date:10/8/2015)... ... , ... Talon Innovations, a provider of Precision Machined Products and ... is one of three finalists for the Minnesota Business magazine’s Manufacturing Award in the ... Innovations was recognized as a nominee for this competitive award. , The “Best ...
(Date:10/7/2015)... 7, 2015 Boston Scientific (NYSE: ... the Boston Scientific Connected Patient Challenge , an ... use of remote patient monitoring to enhance patient care.  ... can submit their ideas and collaborate on solutions through ... Cambridge, MA where they ...
Breaking Biology Technology:
Cached News: