Soy contains many phytochemicals that are beneficial for health. Soy also contains isoflavones, which have a weak estrogenic effect. Isoflavone levels vary in different types of tofu and soy milk products.

Flaxseed, also known as linseed, has been studied as a potential cancer-fighting food. Flaxseed and flaxseed oil are rich sources of the essential fatty acid, alpha-linolenic acid (ALA), which your body used to make omega-3 fatty acids such as eicosapentaenoic acid (EPA).

While research has shown that wholegrains, fruits, vegetables contain many components that may protect against cancer, there is no evidence that taking a particular herb, food or supplement can cure or prevent cancer.

Many people who have had a cancer diagnosis are interested in taking herbs, supplements or other products in the hope that it will help cure their cancer or prevent it returning. These products are referred to as complementary therapies. While some therapies such as yoga, massage and medication can offer benefits in terms of overall wellbeing to cancer survivors, there are many products on the market offering false claims.