Breast Cancer and Olive Oil By Sat Dharam Kaur N.D. | May 7, 2016 Extra virgin olive oil inhibits growth of breast cancer tumors that are positive for HER2neu. Extra-virgin olive oil polyphenols inhibit HER2 (erbB-2)-induced malignant transformation in human breast epithelial cells: relationship between the chemical structures of extra-virgin olive oil secoiridoids and lignans and their inhibitory activities on the tyrosine kinase activity of HER2. Share this postFacebookTwitteremail