The main member of the ω-9 monounsaturated fatty acid is ω-9 fatty acid (oleic acid). ω-9 is completely different from ω-6. First, it is not easy to oxidize. It will not become a terrible peroxide like ω-6. It is the most stable fatty acid among fatty acids. Second, unlike ω-6, it will not reduce HDL and increase LDL. On the contrary, ω-9 can increase HDL and remove LDL, and can effectively prevent and treat atherosclerosis and myocardial infarction. Third, unlike ω-6, once it is consumed too much, it will be oxidized into lipid peroxides, damage the DNA in the cells, and lead to the formation of malignant tumors. The AOM value (comparison standard of oxidation stability) of ω-9 is as high as 80. Not only will it not be oxidized, but it also has a good effect in inhibiting "oncogenes".
The oil with the highest content of ω-9 fatty acids is olive oil, which is why it is also known as "longevity oil" and "liquid gold".