Oleocanthal is a polyphenol found in real extra virgin olive oil. It is already well documented as a very effective anti-inflammatory. In a recent study published in Nutrition and Cancer, it was also found to inhibit the growth of melanoma cancer cells. The study introduced concentrated amounts of oleocanthal into normal cells and melanoma cells and found the normal cells’ growth was regular but the melanoma cells’ growth was greatly reduced. The initial thinking is that the oleocanthal upsets the protein strains responsible for melanoma but that are not found in normal cells.
These are just initial experiments and much more study is needed to determine if consuming real extra virgin olive oil can actually have a inhibiting effect on cancerous cells. However, multiple studies in recent years all point in this direction.