Spanish researchers say, adding as little as 10 teaspoons of olive oil to daily diet could help protect women against breast cancer. <br/><br/>The findings, published in the journal of the Federation of American Societies for Experimental Biology (FASEB), show that olive oil mounts a multi-pronged attack on cancer tumours, stunting their growth, driving their cells to implode and protecting against potentially cancerous damage. <br/><br/>FASEB editor-in-chief Gerald Weissmann said the study is ground-breaking because it shows that olive oil and a Mediterranean diet affect the bodies in a far more significant way than previously believed. <br/><br/>The researchers recommended women add 50 ml – about 10 teaspoons – of high quality, extra-virgin olive oil to their daily diets and warned only long-term use would give results.