Comments on Published Studies

Mechanisms involved in cardiovascular protection associated with a vegetarian diet.

Dear Editor: Navarro et al. have carried out a very interesting study to show that a vegetarian diet is associated to lower circulating levels of matrix metalloproteinase (MMP)-2 and MMP-9 in healthy subjects [1]. The findings reported in this study potentially are of major clinical relevance because they strongly suggest that a vegetarian diet may prevent the activation of critical mechanisms involved not only in cardiovascular diseases but also in a variety of malignant neoplastic diseases associated with increased MMP activity [2]. However, we would like to offer...

Tomatoes or lycopene versus prostate cancer: is evolution anti-reductionist?

Occasionally, but not often, positive things happen in the field of cancer prevention science to popular, good-tasting foods. Cruciferous vegetables have been the subject of intense study, but these foods might be—to modify the expression—an easy pill but a hard food for the public to swallow. By contrast, tomatoes (scientifically classified as a fruit) have overcome their earlier reputation as an inedible and possibly toxic food to become one of the most heavily consumed fruits or vegetables in the Western diet—mostly in the form of pizza, salsa, chili, pasta sauce, and ketchup.

Denon Institute Award for Excellence in Medical/Dental Nutrition Education Lecture, 2002. Will there be a tipping point in medical nutrition education?

The title of this presentation is derived from a national bestseller that defines the moment when an idea, trend, or social behavior crosses a threshold, "tips," and becomes widely disseminated. Three key tipping-point factors are discussed in the context of medical nutrition education. The Law of Few has to do with the essentiality of role models in directing educational curricula and clinical programs. The Stickiness Factor describes the quality and the content of the message that enable the information to have prolonged meaning.

Vegetarian, vegan or meat eater. The pros and the cons.

This article discusses the potential health benefits of a vegetarian diet, while highlighting some potential problems that may occur if such a dietary regimen is adopted, particularly in certain groups. It emphasises the importance of health professionals contributing to people's knowledge of nutrition in order to allow them to choose a healthy diet, whether they are vegetarian or meat eaters

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