cultured foods - elixirs or poisons?

[Todd Allen]

I've been under the impression that cultured foods are generally very healthy.   However, I never looked deeply into the subject.  I've started reading about the polyamines often found in high quantities in these foods and they are a mixed bag.  Some such as spermidine are considered CR mimetics with nearly reserveratrol levels of hype and others such as putrescine are subjects of Dr. Greger scare videos.  Any recommendations for books, articles or other source of info to sort out the hype and fear?

[Saul]

I'd ignore anything posted by Dr. Greger.

  --  Saul