Walnuts are a very popular nut and an excellent source of the omega-3 fatty acid alpha-linolenic acid .

A one-ounce (28-gram) serving of walnuts contains roughly:

  • Calories: 182
  • Fat: 18 grams
  • Protein: 4 grams
  • Carbs: 4 grams
  • Fiber: 2 grams
  • Vitamin E: 1%
  • Magnesium: 11%