Oh, don't credit me with this. P4 medicine is quite an established term, originating from Dr. Leroy Hood who also founded the Institute for Systems Biology, an American nonprofit research institution.

Here is the link to a paper that gives you the background:

https://academic.oup.com/jalm/article/4/1/108/5603054

P4 medicine jives with my approach to DIY lifestyle medicine which is why I often bring it up.