I post this with caution and trepidation.
It is one report only. I have not followed it up. At face value it looks like a very serious article.
It certainly is VERY thought provoking.
I would stress very strongly that if anybody with no other options is tempted it should only be considered in consultation with professional and with strong regular assessment and follow up - like everything else needs DOUBLE DOUBLE checking as to source etc.
High level fish oil supplementaion has on occasions been reported to have adverse effects through excess circulatory effects, thinning etc.
RB
http://www.cabnr.unr.edu/cabnr/newsl...nandcancer.pdf