Mediterranean Diet May Boost Alzheimer's Survival

Patients eating most greens, grains, olive oil lived 4 years longer, study found

By Alan Mozes
HealthDay Reporter

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MONDAY, Sept. 10 (HealthDay News) -- Consuming what's known as a Mediterranean diet -- one loaded with fruits, vegetables, grains and olive oil -- may help Alzheimer's patients live longer, a new study suggests.

The observation comes after researchers tracked the dietary habits of people diagnosed with early-stage Alzheimer's. It follows on earlier work by the same team that suggests these diets may lower the risk of developing Alzheimer's in the first place.

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"This time, we found that Alzheimer's patients who were following the Mediterranean diet had longer survival as compared to those who were following the diet less," said study lead author Dr. Nikolaos Scarmeas, an assistant professor in the department of neurology at Columbia University Medical Center in New York City.

The study is published in the Sept. 11 issue of Neurology.

According to the American Heart Association, diets native to the 16 countries bordering the Mediterranean Sea varies somewhat region to region. However, most regimens include a high intake of fruits, vegetables, breads, cereals, potatoes, beans, nuts, seeds, and olive oil. More than half of all fat-sourced calories in the Mediterranean diet come from monounsaturated fats, such as olive oil. Dairy, fish, poultry, and other sources of saturated fats are eaten at low to moderate levels, the AHA say.

Heart disease rates in Mediterranean nations are lower than in the United States, the AHA adds, although it's not clear that diet alone is responsible for the difference.

To further examine the potential health benefits of the Mediterranean diet, Scarmeas' team compared nutrition and disease progression between 1992 and 2002 among 192 patients with early-stage Alzheimer's, all of whom lived in New York City.

All the patients were 65 and older, most were non-white, and all underwent initial physical and neuro-psychological exams to assess their cognitive capacities. Such evaluations were repeated every 18 months.

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