Research published in the British Journal of Nutrition (Blomhoff R, Carlsen MH), identified several nuts among plant foods with the highest total antioxidant content, suggests nuts’ high antioxidant content may be key.
Walnuts, pecans and chestnuts have the highest antioxidant content of the tree nuts, with walnuts delivering more than 20 mmol antioxidants per 3 ounces (100 grams). Peanuts (although technically, a legume) also contribute significantly to our dietary intake of antioxidants.
Nuts’ high antioxidant content helps explain results seen in the Iowa Women’s Health Study in which risk of death from cardiovascular and coronary heart diseases showed strong and consistent reductions with increasing nut/peanut butter consumption. Total death rates decreased 11% and 19% for nut/peanut butter intake once per week and 1-4 times per week, respectively.
Even more impressive were the results of a review study of the evidence linking nuts and lower risk of coronary heart disease, also published in the British Journal of Nutrition. (Kelly JH, Sabate J.) In this study, researchers looked at four large prospective epidemiological studies—the Adventist Health Study, Iowa Women’s Study, Nurses’ Health Study and the Physician’s Health Study. When evidence from all four studies was combined, subjects consuming nuts at least 4 times a week showed a 37% reduced risk of coronary heart disease compared to those who never or seldom ate nuts. Each additional serving of nuts per week was associated with an average 8.3% reduced risk of coronary heart disease.
Practical Tip: To lower your risk of cardiovascular and coronary heart disease, enjoy a handful of nuts or tablespoon of nut butter at least 4 times a week.
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