Walnut labeled "Supernut" because of high antioxidant conent

Based on antioxidant content (polyphenols), here is how nuts stack up, from highest to lowest:

- walnuts
- Brazil nuts
- pistachios
- pecans
- almonds
- peanuts
- macadamia nuts

References:

The Supernut: Walnuts Pack a Powerful Dose of Antioxidants. TIME.