That said, if there is a significant premium you might prefer to buy oils that have been extracted using other methods.
You might find that you get all the same benefits anyway. Whilst oils extracted under conditions with more heat might have lost some of the nutritional value during the extraction process they may be refortified with vitamins and minerals during the refinement process.
If you have access to the manufacturer just ask.
Lots of sellers also have a lot of information on the oils they sell even when those oils have been purchased from a third party. The more times the oil has changed hands the less likely it is that the seller will have accurate information.
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