1Hill, JO, Wyatt, HR, Reed, GW, et al. (2003) Obesity and the environment: where do we go from here? Sci Tech Froid 299, 853–855.
2Kovacs, EMR & Mela, DJ (2006) Metabolically active functional food ingredients for weight control. Obes Rev 7, 59–78.
3Westerterp-Plantenga, MS, Diepvens, K, Joosen, AMCP, et al. (2006) Metabolic effects of spices, teas, and caffeine. Physiol Behav 89, 85–91.
4Reto, M, Figuera, ME, Filipe, HM, et al. (2007) Chemical composition of green tea (Camellia sinensis) infusions commercialized in Portugal. Plant Foods Hum Nutr 62, 139–144.
5Jin, Y, Jin, CH & Row, KH (2006) Separation of catechin compounds from different teas. Biotechnol J 1, 209–213.
6Van Amelsvoort, JMM, van Het Hof, KH, Mathot, JNJJ, et al. (2001) Plasma concentrations of individual tea catechins after a single oral dose in humans. Xenobiotica 31, 891–901.
7Henning, SM, Niu, Y, Lee, NH, et al. (2004) Bioavailability and antioxidant activity of tea flavanols after consumption of green tea, black tea, or a green tea extract supplement. Am J Clin Nutr 80, 1558–1564.
8Warden, BA, Smith, LS, Beecher, GR, et al. (2001) Catechins are bioavailable in men and women drinking black tea throughout the day. J Nutr 131, 1731–1737.
9Dulloo, AG, Duret, C, Rohrer, D, et al. (1999) Efficacy of a green tea extract rich in catechin polyphenols and caffeine in increasing 24-h energy expenditure and fat oxidation in humans. Am J Clin Nutr 70, 1040–1045.
10Rudelle, S, Ferruzzi, MG, Cristiani, I, et al. (2007) Effect of a thermogenic beverage on 24-hour energy metabolism in humans. Obesity 15, 349–355.
11Dulloo, AG, Seydoux, J, Girardier, L, et al. (2000) Green tea and thermogenesis: interactions between catechin-polyphenols, caffeine and sympathetic activity. Int J Obes 24, 252–258.
12Dulloo, AG, Seydoux, J & Girardier, L (1992) Potentiation of the thermogenic antiobesity effects of ephedrine by dietary methylxanthines: adenosine antagonism or phosphodiesterase inhibition? Metabolism 41, 1233–1241.
13Borchardt, RT & Huber, JA (1975) Catechol O-methyltransferase. 5. Structure–activity relationships for inhibition by flavonoids. J Med Chem 18, 120–122.
14Belza, A, Frandsen, E & Kondrup, J (2007) Body fat loss achieved by stimulation of thermogenesis by a combination of bioactive food ingredients: a placebo-controlled, double-blind 8-week intervention in obese subjects. Int J Obes 31, 121–130.
15Venables, MC, Hulston, CJ, Cox, HR, et al. (2008) Green tea extract ingestion, fat oxidation, and glucose tolerance in healthy humans. Am J Clin Nutr 87, 778–784.
16Kao, Y-H, Hiipakka, RA & Liao, S (2000) Modulation of endocrine systems and food intake by green tea epigallocatechin gallate. Endocrinology 141, 980–987.
17Belza, A, Toubro, S & Astrup, A (2009) The effect of caffeine, green tea and tyrosine on thermogenesis and energy intake. Eur J Clin Nutr 63, 57–64.
18Toubro, S, Christensen, NJ & Astrup, A (1995) Reproducibility of 24-h energy expenditure, substrate utilization and spontaneous physical activity in obesity measured in a respiration chamber. Int J Obes Relat Metabc Disord 19, 544–549.
19Elia, M & Livesey, G (1992) Energy expenditure and fuel selection in biological systems: the theory and practice of calculations based on indirect calorimetry and tracer methods. World Rev Nutr Diet 70, 68–131.
20Haarbo, J, Godtfredsen, A, Hassager, C, et al. (1991) Validation of body composition by dual energy X-ray absorptiometry (DEXA). Clin Physiol 11, 331–341.
21Mazess, RB, Barden, HS, Bisek, JP, et al. (1990) Dual-energy X-ray absorptiometry for total-body and regional bone-mineral and soft-tissue composition. Am J Clin Nutr 51, 1106–1112.
22Desbrow, B, Hughes, R, Leveritt, M, et al. (2007) An examination of consumer exposure to caffeine from retail coffee outlets. Food Chem Toxicol 45, 1588–1592.
23Flint, A, Raben, A, Blundell, JE, et al. (2000) Reproducibility, power and validity of visual analogue scales in assessment of appetite sensations in single test meal studies. Int J Obes Relat Metab Disord 24, 38–48.
24Astrup, A, Buemann, B, Western, P, et al. (1994) Obesity as an adaption to a high-fat diet: evidence from a cross-sectional study. Am J Clin Nutr 59, 350–355.
25Bérubé-Parent, S, Pelletier, C, Doré, J, et al. (2005) Effects of encapsulated green tea and guarana extracts containing a mixture of epigallocatechin-3-gallate and caffeine on 24 h energy expenditure and fat oxidation in men. Br J Nutr 94, 432–436.
26Maki, KC, Reeves, MS, Farmer, M, et al. (2009) Green tea catechin consumption enhances exercise-induced abdominal fat loss in overweight and obese adults. J Nutr 139, 264–270.
27Kajimoto, O, Kajimoto, Y, Yabune, M, et al. (2005) Tea catechins with a galloyl moiety reduce body weight and fat. J Health Sci 51, 161–171.
28Nagao, T, Komine, Y, Soga, S, et al. (2005) Ingestion of a tea rich in catechins leads to a reduction in body fat and malondialdehyde-modified LDL in men. Am J Clin Nutr 81, 122–129.
29Chantre, P & Lairon, D (2002) Recent findings of green tea extract AR25 (Exolise) and its activity for the treatment of obesity. Phytomedicine 9, 3–8.
30Nagao, T, Meguro, S, Soga, S, et al. (2001) Tea catechins suppress accumulation of body fat in humans. J Oleo Sci 50, 717–728.
31Hase, T, Komine, Y, Meguro, S, et al. (2001) Anti-obesity effects of tea catechins in humans. J Oleo Sci 50, 599–605.
32Tsuchida, T, Hiroshige, I & Haruo, N (2002) Reduction of body fat in humans by long-term ingestion of catechins. Prog Med 22, 2189–2203.
33Després, J-P & Lemieux, I (2006) Abdominal obesity and metabolic syndrome. Nature 444, 881–887.
34Diepvens, K, Kovacs, EMR, Nijs, IMT, et al. (2005) Effect of green tea on resting energy expenditure and substrate oxidation during weight loss in overweight females. Br J Nutr 94, 1026–1034.
35Kovacs, EMR, Lejeune, MPGM, Nijs, I, et al. (2004) Effects of green tea on weight maintenance after body-weight loss. Br J Nutr 91, 431–437.
36Hsu, T-F, Kusumoto, A, Abe, K, et al. (2006) Polyphenol-enriched oolong tea increases fecal lipid excretion. Eur J Clin Nutr 60, 1330–1336.
37Hill, AM, Coates, AM, Buckley, JD, et al. (2007) Can EGCG reduce abdominal fat in obese subjects? J Am Coll Nutr 26, 396s–402s.