James A. Vann

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The essential trace mineral selenium is an important determinant of oxidative stress susceptibility, with several studies showing an inverse relationship between selenium intake and cancer. Because different chemical forms of selenium have been reported to have varying bioactivity, there is a need for nutrigenomic studies that can comprehensively assess(More)
Aging is the most significant risk factor for a range of diseases, including many cancers, neurodegeneration, cardiovascular disease, and diabetes. Caloric restriction (CR) without malnutrition delays aging in diverse species, and therefore offers unique insights into age-related disease vulnerability. Previous studies suggest that there are shared(More)
Preferred provider organizations (PPOs) have been under speculation by both the business community and the health care industry in their guests for ways to control health care costs since the first PPO sprang up less than a decade ago. But few of these new health care organizations have been active long enough to establish a reasonable track record. The(More)
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