great article.
One thing that is often overlooked with veg oils is that they are almost always made from seeds.

Seeds are mostly toxic, for a good reason. Seeds tend to be surrounded by tasty stuff like fruit, which is a reward for the bird or mammal to eat the fruit, and pass the seed through the gut, depositing it (with a good dose of organic manure) to its new growth site.

At school we went on a trip to the local sewage works, which was surrounded by masses of tomato plants. It was explained that every one of those plants came from a human bowel motion.

Didn't stop the workers going out and getting a nice ripe tomato for inclusion in lunch!! Also remember that a common method of suicide in the ancient world was to eat the internal part of peach pits.

Nowadays I even stay away from olive oil, preferring lard and tallow.

Cheers
Michael Gardner
Australia