Zeal may help people feel less anxious and more positive, with more energy and vigor. That's exactly what you want to see in a nutritional product, said Zurvita Scientific Advisory Board Chairman Dr. Scott VanLue. Dr. VanLue is a family practice physician with a focus on exercise, nutrition, wellness applications and functional medicine. Dr. VanLue holds a Florida state medical license, a license from the American Academy of Family Practice and a certificate of added qualifications in sports medicine.