The China Study by Thomas Campbell

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64. This recently published study is more interesting than the others because vitamin E was mea-
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65. The effects of vitamin C and selenium in a study by Perkins (Am. J. Epidemio1. 150 (1999):
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78. There is a potential snag in this logic, however. Homocysteine levels are regulated in part by
    B vitamins, most notably folic acid and vitamin Bn, and people who are deficient in these
    vitamins may have higher homocysteine levels. People who do not consume animal-based
    foods are at risk for having low Bn levels, and thus high homocysteine levels. However, as
    described in chapter eleven, this has more to do with our separation from nature, and not a
    defiCiency of plant-based diets.