Protein, fiber and unsaturated fat mean that almonds will keep you full for a while — especially because a 1-ounce serving is 23 whole almonds, a greater amount than other types of nuts.

The walnut is enclosed within a hard shell that is usually cracked open to reveal the nut inside. The two most common types of walnuts are the English walnut (Juglans regia) and the black walnut ...