Mason P (2001) Dietary Supplements, 2nd ed. London: The Pharmaceutical Press.
Webb GP (2006) Dietary Supplements and Functional Foods. Oxford: Blackwell Publishing Ltd.
Barnes J, Anderson LA & Phillipson JD (2002) Herbal Medicines, 2nd ed. London: The Pharmaceutical Press.
Watanabe F, Katsura H, Takenaka S, Fujita T, Abe K, Tamura Y, Nakatasuka T & Nakano Y (1999) Pseudovitamin B12 is the predominant cobalamin of an algal health food, Spirulina tablets. J Agric Food Chem 47, 4736–4741.
Henderson L, Irving K, Gregory J, Bates CJ, Prentice A, Perks J, Swan G & Farron M (2003) The National Diet and Nutrition Survey: Adults Aged 19 to 64 Years. vol. 3: Vitamin and Mineral Intakes and Urinary Analytes. London: The Stationery Office; available at http://www.food.gov.uk/multimedia/pdfs/ndnsv3.pdf
Gregory J, Foster K, Tyler H & Wiseman M (1990) The Dietary and Nutritional Survey of British Adults. London: H. M. Stationery Office.
Mintel (2001) Vitamins and Mineral Supplements. London: Mintel International Group Limited.
Gregory J, Lowe S, Bates CJ, Prentice A, Jackson LV, Smithers G, Wenlock R & Farron M (2000) National Diet and Nutrition Survey: Young People Aged 4 to 18 Years. vol. 1: Findings. London: The Stationery Office.
Finch S, Doyle W, Lowe C, Bates CJ, Prentice A, Smithers G & Clarke PC (1998) National Diet and Nutrition Survey: People Aged 65 Years and Over. London: The Stationery Office.
Hoare J, Henderson L, Bates CJ, Prentice A, Birch M, Swan G & Farron M (2004) National Diet & Nutrition Survey: Adults Aged 19 to 64 Years. vol. 5: Summary Report. London: The Stationery Office.
Douglas RM, Hemila H, D'Souza R, Chalker EB & Treacy B (2004) Vitamin C for preventing and treating the common cold. The Cochrane Database of Systematic Reviews 2004. issue 4. art. no. CD000980. Chichester, West Sussex: John Wiley.
The MRC Vitamin Study Group (1991) Prevention of neural tube defects: results of the Medical Research Council Vitamin Study. Lancet 338, 131–137.
Czeizel AF & Dudas I (1992) Prevention of first occurrence of neural tube defects by periconceptual vitamin supplementation. N Engl J Med 327, 1832–1835.
Eskes TKAB (1998) Neural tube defects, vitamins and homocysteine. Eur J Pediatr 157, Suppl. 2, S139–S141.
Department of Health (1992) Folic Acid and the Prevention of Neural Tube Defects. London: Department of Health.
Department of Health (2000) Folic Acid and the Prevention of Disease. Report on Health and Social Subjects no. 50. London: The Stationery Office.
Botto LD, Lisi A, Robert-Gnansia E, Erickson JD, Vollset SE, Mastroiacovo P et al. (2005) International retrospective cohort study of neural tube defects in relation to folic acid recommendations: are the recommendations working? Br Med J 330, 571–576.
Ball GFM (2004) Vitamins: Their Role in the Human Body. Oxford: Blackwell Publishing Ltd.
Harper AE (1999) Defining the essentiality of nutrients. In Modern Nutrition in Health and Disease, 9th ed., pp. 3–10 [Shils ME, Shike M, Ross AC, Caballero B and Cousins RJ editors]. Philadelphia, PA: Lippincott, Williams and Wilkins.
Bassleer C, Rovati L & Franchimont P (1998) Stimulation of proteoglycan production by glucosamine sulphate in chondrocytes isolated from human osteoarthritic articular cartilage in vitro. Osteoarthritis Cartilage 6, 427–434.
McAlindon TE, La Valley MP, Gulin JP & Felson DT (2000) Glucosamine and chondroitin for treatment of osteoarthritis: a systematic quality assessment and meta-analysis. JAMA 283, 1469–1475.
Manson JJ & Rahman A (2004) This house believes that we should advise our patients with osteoarthritis of the knee to take glucosamine. Rheumatology 43B, 100–101.
Casey A & Greenhaff PL (2000) Does dietary creatine supplementation play a role in skeletal muscle metabolism and performance? Am J Clin Nutr 72, 607S–617S.
Rebouche CJ (2006) Carnitine. In Modern Nutrition in Health and Disease, 10th ed., pp. 537–544 [Shils ME, Shike M, Ross AC, Caballero B and Cousins RJ editors]. Baltimore MD: Lippincott, Williams & Wilkins.
Burr ML, Fehily AM, Gilbert JF, Rogers S, Holliday RM, Sweetman PM, Elwood PC & Deadman NM (1991) Effects of changes in fat, fish and fibre intakes on death and myocardial infarction: Diet and reinfarction trial (DART). Lancet ii, 757–761.
Wang C, Chung M, Lichtenstein A, Balk E, Kupelnick B, DeVine D, Lawrence A & Law J (2004) Effects of Omega-3 Fatty Acids on Cardiovascular Disease. Evidence Report/Technology Assessment no. 94. AHRQ Publication no. 04-E009–2. Rockville, MD: Agency for Healthcare Research and Quality; available at http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=hstat1a.chapter.38290
Crozier A (2003) Classification and biosynthesis of secondary plant products: an overview. In Plants: Diet and Health. Report of the British Nutrition Task Force, pp. 27–48 [Goldberg G editor]. Oxford: Blackwell.
Mulrow C, Lawrence V, Ackerman R, Ramirez G, Morbidoni L, Aguilar C et al. (2000) Garlic: Effects on Cardiovascular Risks and Disease, Protective Effects Against Cancer, and Clinical Adverse Effects. Evidence Report/Technology Assessment no. 20. AHRQ Publication no. 01-E022. Rockville, MD: Agency for Healthcare Research and Quality; available at http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=hstat1.chapter.28361
Department of Health (1994) Nutritional Aspects of Cardiovascular Disease. Report on Health and Social Subjects no. 46. London: H. M. Stationery Office.
Department of Health (1998) Nutritional Aspects of the Development of Cancer. Report on Health and Social Subjects no. 48. London: The Stationery Office.
Gey KF, Puska P, Jordan P & Moser UK (1991) Inverse correlation between plasma vitamin E and mortality from ischemic heart disease in cross cultural epidemiology. Am J Clin Nutr 53, Suppl. 1, 326S–334S.
Riemersma RA, Wood DA, Macintyre CCA, Elton RA, Fey KF & Oliver MF (1991) Risk of angina pectoris and plasma concentrations of vitamins A, C, and E and carotene. Lancet 337, 1–5.
Ziegler RG (1991) Vegetables, fruits and carotenoids and the risk of cancer. Am J Clin Nutr 53, 251S–259S.
Rimm EB, Stampfer MJ, Ascheirio A, Giovannucci EL, Colditz GA & Willett WC (1993) Vitamin E consumption and the risk of coronary heart disease in men. N Engl J Med 328, 1450–1455.
Stampfer MJ, Hennekens CH, Manson JE, Colditz GA, Rosner B & Willett WC (1993) Vitamin E consumption and the risk of coronary disease in women. N Engl J Med 328, 1444–1449.
Hennekens CH, Buring JF, Manson JF, Stampfer M, Rosner B, Cook NR et al. (1996) Lack of effect of long-term supplementation with beta-carotene on the incidence of malignant neoplasms and cardiovascular disease. N Engl J Med 334, 1145–1149.
The Alpha-Tocopherol, Beta Carotene Cancer Prevention Study Group (1994) The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancer in male smokers. N Engl J Med 330, 1029–1035.
Omenn GS, Goodman GE, Thornquist MD, Balmes J, Cullen MR, Glass A et al. (1996) Effect of a combination of beta-carotene and vitamin A on lung cancer and cardiovascular disease. N Engl J Med 334, 1150–1155.
Rapola JM, Virtamo J, Ripatti S, Huttunen JK, Albanes D, Taylor RR & Heinonen OP (1997) Randomised trial of alpha-tocopherol and beta-carotene supplements on incidence of major coronary events in men with previous myocardial infarction. Lancet 349, 1715–1720.
Shekelle P, Morton S, Hardy M, Coulter I, Udani J, Spar M et al. (2003) Effect of Supplemental Antioxidants Vitamin C, Vitamin E, and Coenzyme Q10 for the Prevention and Treatment of Cardiovascular Disease. Evidence Report/Technology Assessment no. 83. AHRQ Publication no. 03-0043. Rockville, MD: Agency for Healthcare Research and Quality; available at http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=hstat1a.chapter.16082 Coulter I, Hardy M, Shekelle P, Morton SC, Udani J, Spar M et al. (2003) Effect of the Supplemental Use of Antioxidants Vitamin C, Vitamin E, and the Coenzyme Q10 for the Prevention and Treatment of Cancer. Summary. Evidence Report/Technology Assessment no. 75. AHRQ Publication no. 03-E047. Rockville, MD: Agency for Healthcare Research and Quality; available at http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=hstat1a.chapter.90979
Vivekanathan DP, Penn MS, Sapp SK, Hsu A & Topol EJ (2003) Use of antioxidant vitamins for the prevention of cardiovascular disease: meta-analysis of randomised trials. Lancet 361, 2017–2023.
Bjelakovic G, Nikolova D, Gluud LL, Simonetti RG & Gluud C (2007) Mortality in randomized trials of antioxidant supplements for primary and secondary prevention. Systematic review and meta-analysis. JAMA 297, 842–857.
Poston L, Briley AL, Seed PT, Kelly FJ & Shennan AH (2006) Vitamin C and vitamin E in pregnant women at risk for pre-eclampsia (VIP trial): randomised placebo-controlled trial. Lancet 367, 1145–1154.
Ahluwalia J, Tinker A, Clapp LH, Duchen MR, Abramov AY, Pope S, Nobles M & Segal AW (2004) The large-conductance Ca2+-activated K+ channel is essential for innate immunity. Nature 427, 853–859.