How beneficial is flax seed in a cardiac diet or diabetic diet - and how do you use it???

I use flaxseed oil. Its very beneficial because its an omega 3 fat. I take 1 tbsp every morning. Its better to take the oil than the capsules, you have to take 16 caps a day to get the benefit of 1 tbsp. Go to wholehealthmd.com it gives you info on every vitamin,mineral and supplement you want.