Walnuts are round, single-seeded stone fruits that grow from the walnut tree. They are a good source of healthful fats, protein, and fiber.
Walnuts are a good source of the mineral copper. Several plant compounds and nutrients in walnuts may help decrease inflammation, which is a key culprit in many chronic diseases.
Walnuts are believed to have originated in the regions of the Mediterranean and Central Asia, and they have been cultivated for thousands of years. Today, they are grown in many countries around the world and are a popular food item due to their nutritional value and versatility in cooking. Countries like China, the United States, Turkey, Iran, and Mexico are some of the leading producers of walnuts.