"BMI isn't the problem, " said Walter Willett, chair of the department of nutrition at the Harvard School of Public Health.

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The most telling comment on the two new studies comes from Walter Willett, a nutritionist at the Harvard School of Public Health.

ECONOMIST: Nutrition

" Adds Harvard School of Public Health epidemiologist Walter Willett: "It is hard to put a finger on a specific food that prevents cancer in general.

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Dr Walter Willett, from the Harvard School of Public Health said: "This is an even greater pile of rubbish" than a study conducted by the same group in 2005.

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Among them was Walter Willett, M.

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"Of course, a lot of people would like to hear that it's no problem that they are overweight or obese, " said Walter Willett, professor of medicine at Harvard Medical School and chair of the Harvard School of Public Health's Department of Nutrition.

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