Most nutrition experts recommend ground over whole flaxseed because the ground form is easier to digest. Whole flaxseed may pass through your intestine undigested, which means you won't get all the benefits.
How do you prepare linseed?
Pour whole flax seeds into a dry skillet and turn the burner to medium heat. Stir the flax seeds occasionally as they toast and give off a nutty smell. If you'd rather toast them in the oven, spread them on a dry sheet and roast them at 375 °F (191 °C) for 5 to 10 minutes.
Does flaxseed lose nutritional value when ground?
Ground flaxseed is easier to digest than whole flaxseed. Whole flaxseed may pass through your intestine undigested, which means you won't get its full nutritional benefit.