You are seeing this message because you are using the Internet Explorer web browser. Internet Explorer has not been updated with new features since the release of Windows 10 in July 2015, so it doesn't support the modern standards that our website uses. We recommend switching to Google Chrome, Mozilla Firefox, or Microsoft Edge, all of which our website is tested with.
In January, 2007, the New England Journal of Medicine published a study by Henley et al linking lavender and/or tea tree oil to prepubertal gynecomastia (enlarged breast tissue) in boys. Since that time, several industry experts have presented evidence that lavender and tea tree oils cannot be linked to prepubertal gynecomastia. It is NAHA's position that until proven otherwise, these oils are safe for use as long as NAHA's Safety Guidelines such as proper dilution are followed.
In partnership with NAHA, the Franklin School of Integrative Health Sciences’ Research Department is leading a 3-part research project to investigate the proposed link between lavender and tea tree essential oils and endocrine disrupting outcomes, including prepubertal gynecomastia.
Not a member yet but would like to stay up to date with NAHA? Considering joining but would like to explore the National Association for Holistic Aromatherapy more? Join our e-newsletter today and stay in touch.
Copyright © 2023 National Association for Holistic Aromatherapy. All rights reserved.
The National Association for Holistic Aromatherapy is a 501(c)3 non-profit association.
All material provided on this website is provided for informational or educational purposes only, and is not intended as a substitute for the advice provided by your healthcare professional or physician.