Pumpkin seeds are a good source of antioxidants, magnesium, zinc and fatty acids — all of which may help keep your heart healthy . Animal studies have also shown that pumpkin seed oil may reduce high blood pressure and high cholesterol levels — two important risk factors for heart disease. Pumpkin seeds are an edible seed typically roasted for consumption. They are a common ingredient in Mexican cuisine and are often eaten as a healthful snack. Pumpkin seeds are a good source of magnesium, which is important for bone formation. Pumpkin seeds are a good source of zinc.