Walnuts in shell from the Agrigento area.

Large sturdy shell.

Nuts are a highly energetic food (689 kcal / 100g), have a very low glycemic index (speed with which blood sugar increases following the intake of a given quantity of nuts) and are characterized, like all dried fruit, by '' high lipid content (68g / 100g), they are also rich in zinc, copper, iron (2.1mg / 100g), vitamin E and B vitamins.

Monounsaturated fats, and especially polyunsaturated fats, seem to be able to lower LDL cholesterol and triglyceride content in the blood.