HOME >> BIOLOGY >> NEWS
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
rmackar@niehs.nih.gov
919-541-0073
NIH/National Institute of Environmental Health Sciences
31-Jan-2007


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:
*Name:
*Comment:
*Email:


(Date:4/14/2016)... Israel , April 14, 2016 ... Authentication and Malware Detection, today announced the appointment of ... assumed the new role. Goldwerger,s leadership appointment ... on the heels of the deployment of its platform ... BioCatch,s behavioral biometric technology, which discerns unique cognitive and ...
(Date:3/29/2016)... Florida , March 29, 2016 ... the "Company") LegacyXChange "LEGX" and SelectaDNA/CSI Protect are pleased ... in ink used in a variety of writing instruments, ... Buyers of originally created collectibles from athletes on LegacyXChange ... forensic analysis of the DNA. Bill ...
(Date:3/21/2016)... WAKEFIELD, Massachusetts , March 22, 2016 ... and facial recognition with passcodes for superior security ... MESG ), a leading provider of secure digital communications ... pilot their biometric technology and offer enterprise customers, particularly ... provide secure facial recognition and voice authentication within a ...
Breaking Biology News(10 mins):
(Date:4/29/2016)... CA (PRWEB) , ... April 29, 2016 , ... Summit ... (NSCF) to support the development of a patient-specific stem cell therapy for the treatment ... the lab of Dr. Jeanne Loring at The Scripps Research Institute in San Diego, ...
(Date:4/28/2016)... ... April 28, 2016 , ... ... Connecticut's innovative, growing companies, today announced the launch of VentureClash , a ... companies. , “VentureClash looks to attract the best early-stage companies here ...
(Date:4/27/2016)... (PRWEB) , ... April 27, 2016 , ... ... of cannabis testing technology at the Spring 2016 Marijuana Business Conference and Expo. ... pesticides, residual solvents, heavy metals, and more. Expo attendees can stop by booth ...
(Date:4/27/2016)... (PRWEB) , ... April 27, 2016 , ... ... (d/b/a Biohaven) is pleased to announce the appointment of John Tilton as Chief Commercial ... Executive Director and one of the founding commercial leaders responsible for the commercialization ...
Breaking Biology Technology:
Cached News: