Level of Evidence for Selected Vegetables�/�Sun's Soup
Existing data supporting the effectiveness of Selected Vegetables/Sun's Soup as a treatment for cancer are limited and weak. To date, only two clinical studies have been reported in the peer-reviewed scientific literature.[1,2] These studies tested the ability of Selected Vegetables/Sun's Soup to prolong the survival of patients with advanced non-small cell lung cancer. Although ingestion of Selected Vegetables/Sun's Soup was associated with improved survival in both studies, the results may not be reliable because of the small numbers of patients included in the studies (i.e., a total of 18 evaluable patients) and because of other major weaknesses in the designs of the studies. Different formulations of Selected Vegetables/Sun's Soup were used in the two studies, making a comparison of the results difficult. Information about the effectiveness of Selected Vegetables/Sun's Soup as a treatment for other types of cancer is found only in anecdotal reports,[3,4] and no information is available about the safety or the efficacy of this treatment approach in pediatric patients. Additional larger, well-designed clinical studies that test identical formulations of vegetables and herbs are necessary to determine more clearly whether Selected Vegetables/Sun's Soup can be useful in the treatment of non-small cell lung and other types of cancer.
Separate levels of evidence scores are assigned to qualifying human studies on the basis of statistical strength of the study design and scientific strength of the treatment outcomes (i.e., endpoints) measured. The resulting two scores are then combined to produce an overall score. For additional information about levels of evidence analysis, refer to Levels of Evidence for Human Studies of Cancer Complementary and Alternative Medicine.
Check NCI's list of cancer clinical trials for cancer CAM clinical trials on marijuana, nabilone, dronabinol and nabiximols that are actively enrolling patients.
General information about clinical trials is available from the NCI Web site.
Sun AS, Ostadal O, Ryznar V, et al.: Phase I/II study of stage III and IV non-small cell lung cancer patients taking a specific dietary supplement. Nutr Cancer 34 (1): 62-9, 1999.
Sun AS, Yeh HC, Wang LH, et al.: Pilot study of a specific dietary supplement in tumor-bearing mice and in stage IIIB and IV non-small cell lung cancer patients. Nutr Cancer 39 (1): 85-95, 2001.
Sun AS: Herbal Treatment of Malignancy. US Patent 5437866. August 1, 1995. Washington, DC: US Patent and Trademark Office, 1995. Available online. Last accessed August 25, 2011.
Sun A: Food therapy for non-small cell lung cancer. In: Comprehensive Cancer Care: Integrating Complementary and Alternative Therapies - A Conference for Health professionals, June 12-14, 1998. Breakout Session 405: Herbal Therapies. Available online. Last accessed August 25, 2011.