SuperFoods Rx: Fourteen Foods That Will Change Your Life. Steven G. Pratt, Kathy Matthews. HarperCollins, 2006.
DiGiovanna JJ. Retinoid chemoprevention in patients at high risk for skin cancer. Med Pediatr Oncol 2001;36:564-7.
Zhang S, Hunger DJ, Forman MR, et al. Dietary carotenoids and vitamins A, C, and E and risk of breast cancer. J Natl Cancer Inst 1999;91:547-56.  
Toniolo P, Van Kappel AL, Akhmedkhanov A, Ferrari P, Kato I, Shore RE, Riboli E. Serum carotenoids and breast cancer. Am J Epidemiol. 2001 Jun 15;153(12):1142-7.
Levi F, Pasche C, Lucchini F, La Vecchia C. Selected micronutrients and colorectal cancer. a case-control study from the canton of Vaud, Switzerland. Eur J Cancer. 2000 Oct;36(16):2115-9.
Garcia–Closas R, Castellsague X, Bosch X, Gonzalez CA. The role of diet and nutrition in cervical carcinogenesis: a review of recent evidence. Int J Cancer. 2005;117:629–637.
Cook N, Stampfer MJ, Ma J, et al. Beta-carotene supplementation for patients with low baseline levels and decreased risks of total and prostate carcinoma. Cancer 1999;86:1783-92.
Ruano-Ravina A, Figueiras A, Barros-Dios JM. Diet and lung cancer: a new approach. Eur J Cancer Prev 2000;9:395-400. 
Schabath MB, Grossman HB, Delclos GL, Hernandez LM, Day RS, Davis BR, Lerner SP, Spitz MR, Wu X. Dietary carotenoids and genetic instability modify bladder cancer risk. J Nutr. 2004 Dec;134(12):3362-9.
Xu XR, Zou ZY, Huang YM, Xiao X, Ma L, Lin XM. Serum carotenoids in relation to risk factors for development of atherosclerosis. Clin Biochem. 2012 Jul 28.
Tavani A, La Vecchia C. Biomed Pharmacother. Beta-carotene and risk of coronary heart disease. A review of observational and intervention studies. 1999 Oct;53(9):409-16.
Ito Y, Kurata M, Suzuki K, Hamajima N, Hishida H, Aoki K. Cardiovascular disease mortality and serum carotenoid levels: a Japanese population-based follow-up study. J Epidemiol. 2006 Jul;16(4):154-60.
Sluijs I, Beulens JW, Grobbee DE, van der Schouw YT. Dietary carotenoid intake is associated with lower prevalence of metabolic syndrome in middle-aged and elderly men. J Nutr. 2009 May;139(5):987-92. Epub 2009 Mar 25.
Bendich, A., Carotenoids and the immune response. J. Nutr. 1989: 119, 112-115.
http://www.webmd.com/healthy-aging/features/anti-aging-diet
Berson EL. Nutrition and retinal degenerations. Int Ophthalmol Clin. 2000 Fall;40(4):93-111.
Chaoyang Li, MD, PhD; Earl S. Ford, MD, MPH; Guixiang Zhao, MD, PhD; Lina S. Balluz, MPH, ScD; Wayne H. Giles, MD, MS; Simin Liu, MD, ScD. Serum {alpha}-Carotene Concentrations and Risk of Death Among US Adults The Third National Health and Nutrition Examination Survey Follow-up Study. Arch Intern Med., November 22, 2010
Nagata C, Nakamura K, Wada K, Oba S, Hayashi M, Takeda N, Yasuda K. Association of dietary fat, vegetables and antioxidant micronutrients with skin ageing in Japanese women. Br J Nutr. 2010 May;103(10):1493-8. Epub 2010 Jan 20.
Burger KN, Beulens JW, et al. Dietary fiber, carbohydrate quality and quantity, and mortality risk of individuals with diabetes mellitus. PLoS One. 2012;7(8):e43127. Epub 2012 Aug 23.
Kaushik S, Wang JJ, Flood V, et al. Dietary glycemic index and the risk of age-related macular degeneration. Am J Clin Nutr. 2008 Oct;88(4):1104-10.
Barclay AW, Petocz P, et al. Glycemic index, glycemic load, and chronic disease risk--a meta-analysis of observational studies. Am J Clin Nutr. 2008 Mar;87(3):627-37.
McMillan-Price J, Brand-Miller J. Low-glycaemic index diets and body weight regulation. Int J Obes 2006; 30: S40–S46.
Khaw KT, Bingham S, Welch A, et al. Relation between plasma ascorbic acid and mortality in men and women in EPIC-Norfolk prospective study: a prospective population study. European Prospective Investigation into Cancer and Nutrition. Lancet. 2001;357:657-63.
Age-Related Eye Disease Study Research Group. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E, beta carotene, and zinc for age-related macular degeneration and vision loss: AREDS report no. 8. Arch Ophthalmol. 2001 Oct;119(10):1417-36.
University Of Texas M. D. Anderson Cancer Center. "One Form Of Vitamin E Appears Beneficial In Reducing Bladder Cancer Risk." ScienceDaily, 31 Mar. 2004. Web. 23 Oct. 2012.
Mangialasche F, Kivipelto M, Mecocci P, Rizzuto D, Palmer K, Winblad B, Fratiglioni L. High plasma levels of vitamin E forms and reduced Alzheimer's disease risk in advanced age. J Alzheimers Dis. 2010;20(4):1029-37.
Vitamins and Supplements Lifestyle Guide. http://www.webmd.com/vitamins-and-supplements/lifestyle-guide-11/supplement-guide-potassium
Laires MJ, Monteiro CP, Bicho M. Role of cellular magnesium in health and human disease. Front Biosci. 2004 Jan 1;9:262-76.
Paolisso G, Barbagallo M. Hypertension, diabetes mellitus, and insulin resistance: the role of intracellular magnesium. Am J Hypertens. 1997;10:346–55.
Champagne CM. Magnesium in hypertension, cardiovascular disease, metabolic syndrome, and other conditions: a review. Nutr Clin Pract. 2008 Apr-May;23(2):142-51.
http://www.ars.usda.gov/is/AR/archive/may04/energy0504.htm?pf=1
Woyengo, T A; Ramprasath, V R; Jones, P J H (2009). "Anticancer effects of phytosterols". European Journal of Clinical Nutrition 63 (7): 813–20.
Ostlund RE Jr. Phytosterols and cholesterol metabolism. Curr Opin Lipidol. 2004 Feb;15(1):37-41.
Riedel WJ, Klaassen T, Schmitt JA. Tryptophan, mood, and cognitive function. Brain Behav Immun. 2002 Oct;16(5):581-9.
Thomson J, Rankin H, Ashcroft GW, et al. The treatment of depression in general practice: a comparison of L-tryptophan, amitriptyline, and a combination of L-tryptophan and amitriptyline with placebo. Psychol Med. 1982 Nov;12(4):741-51.
Singh M, Das RR. Zinc for the common cold. Cochrane Database of Systematic Reviews 2011, Issue 2.
Benign prostatic hyperplasia, University of Maryland Medical Center, http://www.umm.edu/altmed/articles/benign-prostatic-000018.htm
Carbin BE, Larsson B, Lindahl O. Treatment of benign prostatic hyperplasia with phytosterols. Br J Urol. 1990; 66(6):639-641.
Friederich M, Theurer C, Schiebel-Schlosser G. Prosta Fink Forte capsules in the treatment of benign prostatic hyperplasia. Multicentric surveillance study in 2245 patients [Article in German]. Forsch Komplementarmed Klass Naturheilkd. 2000; 7(4):20020-4.