Nut consumption is strongly linked to reduced coronary heart disease, with less rigorous evidence for several other health benefits, according to the American Journal of Clinical Nutrition.
Regular nut consumption is associated with health benefits in observational studies of various populations, within which are people eating few nuts and others eating nuts frequently. Health outcomes of the two groups are compared over time. Frequent and long-term nut consumption is linked to:
- reduced coronary heart disease (heart attacks, for example)
- reduced risk of diabetes in women (in men, who knows?)
- less gallstone disease in both sexes
- lower body weight and lower risk of obesity and weight gain
The heart-protective dose of nuts is three to five 1-ounce servings a week.
Reference: Sabaté, Joan and Ang, Yen. Nuts and health outcomes: New epidemiologic evidence. American Journal of Clinical Nutrition, 89 (2009): 1,643S-1,648S.