A previous study by Dr Kenneth Korach - who was also co-investigator for this study - found that lavender and tea tree oil had properties that competed with or hindered the hormones that control male characteristics, which could affect puberty and growth.
Image copyright GETTY IMAGES
The new study looked at eight key chemicals from the hundreds that make up the oils. Four of the tested chemicals appear in both oils and the others were in either oil.
They were tested on human cancer cells in the laboratory to measure the changes.
The researchers found all eight demonstrated varying degrees of promoting oestrogen and/or inhibiting testosterone properties.
"Lavender oil and tea tree oil pose potential environmental health concerns and should be investigated further," said Mr Ramsey.
Many of the chemicals tested appear in at least 65 other essential oils, which is of concern, he added.
Linkback:
https://tubagbohol.mikeligalig.com/index.php?topic=89386.0