Are walnuts fattening?

Walnuts are high in calories and contain a considerable amount of fat, but they provide numerous health benefits, making them a good source of protein even for those seeking to lose weight. One ounce of walnuts has 183 calories and 18 grams of fat.

Walnuts have a variety of important vitamins and minerals including calcium, iron and vitamin C. Additionally, walnuts are high in fiber; each ounce of walnuts contains 2 grams of dietary fiber, representing about 8 percent of the average person's daily needs. Walnuts also have a number of amino acids, omega-3 fatty acids and phytochemicals that improve human health.