But the mice treated with extra virgin took an extra six weeks to show any sign of cancer. The tumours they did develop were smaller and less frequent. There was also less genetic damage to skin cells.

• 但是，涂了优质纯橄榄油的老鼠又经过6周时间才显示出有癌变的迹象，而且产生的肿块少且小，对皮肤细胞造成的损害也较小。