25 patients who were scheduled to have prostate removal surgery.

Asked to use 3 rounded tablespoons of ground flaxseed once a day for 34 days.

This group showed lowered testosterone levels, early stage cancer patients showed a trend of reduced PSA levels and slightly reduced tumors
compared to a control group.

Personally, I grind up flaxseed and can store in my freezer for almost a month and use each day.

I’ll have to look for a copy of the article but one could probably type flaxseed in search here and find it.

There are other articles posted on site now that show that soy genisten and sulfurophane from broccoli etc. also prevent prostate cancer.

While animal studies have found ALA to be protective, human studies have found that DHA & EPA are the only omega-3 fatty acids that seem to reduce PC risk. These fatty acids are not available in sufficient quantity in the diet, and must be obtained through fish oil supplementation. Very little ALA is converted to DHA/EPA in the body - a negligable amount if there is a vitamin B6 deficiency.

ALA supplementation from flax seed oil (which is subject to rapid oxidation) is associated with a poorer prognosis, so some have proposed chewing on flax seeds, or grinding the seeds immediately before eating them. (I doubt that there were many in the study who did that!) But overall, the study casts doubt on this strategy.

Vegetarians may nonetheless have dietary habits that moderate their risk, but flax seed consumption appears not to be one of them.