Linen (Linum usitatissimum) is a very important oilseed in Canada and this country is responsible for the majority of its exports around the world, also known as linseed.
Besides containing a-linolenic acid and having high quality protein, linseed has a strong potential as being a natural source of flavonoids, lignans and phenolic acids, all of which may have a protective effects against cancer.
Linseed also contains phytic acid, which presents hypocholesterolemic (reduces cholesterol), antioxidants and anticarcinogenic effects.
Other components of linseed are tocopherols which are the strongest fat soluble antioxidants.
Another purpose of linseed is its well know function against constipation.
So, summarizing, linseed is helpful against cardiovascular diseases, cancer and digestive disorders.
Source: Functional Foods: Biochemical and Processing Aspects