The fairly short (11+ minutes) Youtube video below is Dr. Scholz summarizing the gist of the article mentioned in the above post.
The above post actually does summarize the article pretty well, although I would add a couple of things mentioned in the video that were not mentioned in the above post:
1. Men with a genetic predisposition for developing PCa benefited especially from change to healthy diet.
2. Change to plant-based diet was associated with PSA decrease.
https://www.youtube.com/watch?v=-ubhmxvyz-k