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>For example, people who like the taste of plants are probably far less likely to enjoy eating red meat, salty foods, and many other things that have been associated with increased mortality.

Which, incidentally, have really only been associated with increased mortality through flawed epidemiological studies such as this one.

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Flawed is a strong word. There is little doubt that meat and sodium intake are associated with a number of poor health outcomes. (Run almost any regression you can think of.) That is a much weaker statement than saying the former causes the latter, which is why responsible researchers are reluctant to do so unless there is very convincing evidence. Even if you are not convinced of the causal link, you would be well served to moderate your consumption of these foods on the chance that one exists.

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