Health Benefits of Flax Seeds and Flaxseed Oil

Flax seed use with Prostate Cancer:

This question is for Ted-

My father has prostate cancer, he had the HIFU treatment last year. His PSA was just done and has jumped from 1.4 to 10.7 in just 3 months. In November 2008, I encouraged him to start taking ground flax seed meal daily. I have recently read conflicting articles on the use of flax seed meal with prostate problems (estrogen). I'm thinking maybe the flax seed is responsible for the recent elevated PSA? I'm hoping you could shed some light on that. He also currently takes Vit C, D3, E, fish oil, selenium. He is drinking ACV and alkaline water (bought an alkalizer). I need to harp on him for his sweet tooth, so I'm sure there is a candida issue.