Squash was one of the earliest plant domesticates in the Western Hemisphere. Pampkin seeds have been eaten and used as medicine since at least the time of the Aztecs and probably much earlier.

An excellent source of minerals, particularly zinc, magnesium and manganese, they are also rich in essential fats, proteins and vitamins. Very rich in phyto-chemicals (hence the intense green colour), they are said to have various important health properties: help deter parasites, have positive effect on kidneys and urinary tract and help to protect prostate.
Some studies have also found pumpkin seeds to prevent arteriosclerosis (hardening of the arteries) and to regulate cholesterol levels in the body.

This one of nature's almost perfect foods is an excellent snack choice.
They can also be added to soups and salads providing a nutty flavour; pumpkin seed oil can be used as a salad dressing when combined with products like honey and olive oil. They are most nutritious when eaten raw.