Not eating walnuts may double our risk of dying from heart disease (compared to at least one serving a week), perhaps because nuts appear to improve endothelial function, allowing our arteries to better relax normally.This helps explain why Nuts May Help Prevent Death. What else can nuts do? See, for example:• Fighting Inflammation in a Nut Shell • Tree Nuts or Peanuts for Breast Cancer Prevention? • Pistachio Nuts for Erectile Dysfunction • Nuts and Bolts of Cholesterol Lowering. Don't nuts make us fat, though? You may be surprised—see Nuts and Obesity: The Weight of Evidence .Which type of walnut is better? Black Versus English Walnuts .What about the phytates in nuts--do we need to soak or toast them? See:• Phytates for the Prevention of Osteoporosis • Phytates for the Prevention of Cancer • Phytates for Rehabilitating Cancer Cells • Phytates for the Treatment of Cancer .Have a question for Dr. Greger about this video? Leave it in the comment section at and he'll try to answer it!