I know that when vaporizing, you only get THC and no CBD/CBN, etc. is the same true for eating, or are the other cannibinoids fat soluble as well?

Are you sure you only get the THC? The CBNs boiling point is very near of the THCs boiling point... i dont know about the CBDs boiling point, but it must not be much higher than the THCs.
And all this cannabinoids are fat-soluble... so eating weed will produce a high which is a mix of the highs of each one of this cannabinoids.

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