Natural health: Are flaxseeds harmful and how to deal with Delayed Onset Muscle Soreness

Is it true that flaxseeds can help with breast cancer? I have read information that suggests it is. However, I have also read that flaxseed turns rancid easily and so might actually cause cancer. Please can you clarify?

The lignans present in flaxseeds are what makes this a stand out choice in terms of natural foods to help with reducing tumour growth. Flaxseeds actually contain around 800 times more lignans than most other plant-based foods.

A randomised, double-blind, placebo-controlled clinical trial of flaxseeds in breast cancer patients indicated that flaxseeds may have the potential to reduce tumour growth in mere weeks. Flaxseed oil or freshly ground flaxseeds form the basis of many natural cancer protocols, such as Gerson Therapy.