Thanks to a series of outstanding university studies conducted and published over the past fifteen years, the world is learning more and more about the exceptional health benefits of eating walnuts. Variously described as one of Dr. Steven Pratt's fourteen “SuperFoods,” “a powerhouse of goodness in a crunchy natural package,” and “rich in Omega-3,” walnuts offer healthy benefits for consumers across the globe.
Recently-published studies indicate walnuts provide benefits in the following areas:
- Eating walnuts protects the heart against short-term damage from saturated fats. (Published in the Journal of the American College of Cardiology, October 17, 2006)
- Walnuts, an important part of the so-called Mediterranean diet, may reduce the risks of heart attack and cardiovascular disease by up to one half. (Published in the Annals of Internal Medicine, July 4, 2006)
Published in the September 2005 issue of Nutrition: The International Journal of Applied and Basic Nutritional Sciences, research from the University of Texas has proven that walnuts are a natural source of melatonin and, further, that walnuts are the richest known food source of melatonin. “The ingredients in walnuts would be expected to reduce the incidence of cancer, delay or make less severe neurodegenerative diseases of aging - including Parkinson's and Alzheimer's Disease - and reduce the severity of cardiovascular disease,” according to Dr. Russel Reiter, PhD, and Professor of Neuroendocrinology at the University of Texas.
- A new study in Australia shows that eating a handful of walnuts daily can help patients with Type 2 diabetes achieve recommended intakes of polyunsaturated fatty acids (such as Omega-3), critical to protecting the heart. (Published in the Journal of the American Dietetic Association, July 2005)
A November 2004 study from The Pennsylvania State University, published in the Journal of Nutrition, shows that eating walnuts can significantly reduce C-reactive proteins and harmful plaque adhesion molecules in the arteries. Many people look to fish, such as salmon, for Omega-3's. However, Penny Kris-Etherton, PhD, distinguished professor at Penn State and primary investigator for the study says, “The Omega-3 fatty acids in walnuts were converted to the same Omega-3 fatty acids found in marine sources, and had a similar effect on inflammation.”
- The Omega-3 content in walnuts far exceeds the Omega-3 content in all other tree nuts. Walnuts contain over 2.5 grams per ounce of Omega-3. The next highest nut source is pecans, which have only about 0.25 grams per ounce. This means walnuts have nearly ten times the amount of Omega-3 of the next highest tree nut. Almonds and Peanuts, by the way, have no Omega-3 at all.
In a landmark decision in March 2004, the United States Food and Drug Administration delivered the strongest governmental endorsement of walnuts to date when it affirmed: “Supportive but not conclusive research shows that eating 1.5 ounces per day of walnuts, as part of a low saturated fat and low cholesterol diet and not resulting in increased caloric intake, may reduce the risk of coronary heart disease.”
These and many other studies are summarized in the “California Walnuts Health Research Update” link of the California Walnut Commission's website at:
California Walnut Board
California Walnut Commission
Walnuts Among Healthiest Foods
You On A Diet
Drs. Mehmet Oz and Michael Roizen
SuperFoods RX — The Wonder of Walnuts
Omega-3s — Walnuts and Heart Health
American Heart Association
Holistic Nutrition Walnuts & Cholesterol
Holistic Nutrition & Omega-3s
MSN Health & Fitness
American College of Cardiology
Anti-Aging Benefits of Walnuts
Dr. Mao's Secret's of Longevity
Nutrition Data
American Journal of Clinical Nutrition
Nutrition Data
World's Healthiest Foods
Walnuts and Brain Health
Society for Neuroscience