Hi ! TNF is a very complex protein that (to the best of my knowledge) is only produced by animals and not plants. I'm familiar with the Facebook meme, but I think it's been debunked (i.e. the Japanese researchers don't claim anywhere in their paper that bananas have TNF). That being said, it might be worth a quick call to your Rheumatologist if you are unsure. If you do give them a call, please let us know what you find out!
-Victoria, Community Moderator