I believe Dr Eddelstein said that in fact all oils are inflammatory. I also have read several anecdotal posts that state that coconut oil and grass fed butter can be the sole source of fats.
Information on fats can be confusing , especially since the debate of which ones are good and in what...
http://www.bmj.com/content/349/bmj.g6015
The results are a bit concerning even though the authors state:
"The results should, however, be interpreted cautiously given the observational design of our study. The findings merit independent replication before they can be used for dietary...