Details are in the American Journal of Clinical Nutrition. From the abstract:
“Our meta-analysis indicates that nut intake is inversely associated with ischemic heart disease, overall cardiovascular disease, and all-cause mortality but not significantly associated with diabetes and stroke. The inverse association between the consumption of nuts and diabetes was attenuated after adjustment for body mass index. These findings support recommendations to include nuts as part of a healthy dietary pattern for the prevention of chronic diseases.”
Nuts feature prominently in all my diet plans. Heart disease is still the No.1 killer in Western societies.
Advanced Mediterranean Diet 