Naunyn Schmiedebergs Arch Pharmacol 1999, 359:310–321.PubMedCrossRef 41. Sae-tan S, Grove KA, Lambert JD: Weight control and prevention of metabolic syndrome by green tea. Parmacol Res 2011, 64:146–154.CrossRef 42. Belza A, Toubro S, Astrup A: The effect of caffeine, green
tea and tyrosine on thermogenesis and energy intake. Eur J Clin Nutr 2009, 63:57–64.PubMedCrossRef 43. Maridakis V, Herring MP, O’Connor PJ: Sensitivity to change in cognitive performance and mood measures of energy and fatigue in response to differing doses of caffeine or breakfast. Int J Neurosci 2009, 119:975–994.PubMedCrossRef 44. Goldstein ER, Ziegenfuss T, Kalman D, Kreider R, Campbell B, Wilborn C, Taylor L, Willoughby D, Stout J, Graves BS, Wildman R, Ivy JL, Spano M, Smith AE, Antonio J: International society of sports BI 2536 chemical structure nutrition position stand: caffeine and performance. J Int Soc Sports Nutr 2010, 7:5.PubMedCrossRef 45. Hursel R, Westerterp-Plantenga MS: Thermogenic ingredients and body weight regulation. Int J Obes (Lond) 2010, 34:659–669.CrossRef 46. Ahnis A, Riedl A, Figura
A, Steinhagen-Thiessen E, Liebl ME, Klapp BF: Psychological and sociodemographic predictors of premature discontinuation of a CB-839 supplier 1-year multimodal outpatient weight-reduction program: an attrition analysis. Patient Prefer Adherence 2012, 6:165–177.PubMedCrossRef 47. Inelmen EM, Toffanello ED, Enzi G, Gasparini G, Miotto F, Sergi G, Busetto
L: Predictors of drop-out in overweight and obese outpatients. Int J Obes (Lond) 2005,29(1):122–128.CrossRef 48. Black AE, Prentice AM, Goldberg GR, Jebb SA, Bingham SA, Livingstone MB, Coward WA: Measurements of total energy expenditure provide insights into the validity of dietary measurements of energy intake. J Am Diet Assoc 1993, 93:572–579.PubMedCrossRef 49. Keophiphath M, Priem F, Jacquemond-Collet I, Clément K, Lacasa D: 1,2-vinyldithiin from garlic inhibits differentiation and inflammation of human preadipocytes. J Nutr 2009,139(11):2055–2060.PubMedCrossRef 50. Sahebkar A: Potential efficacy of ginger as a natural supplement for nonalcoholic DNA ligase fatty liver disease. World J Gastroenterol 2011,14(2):271–272.CrossRef 51. Albarracin CA, Fuqua BC, Evans JL, Goldfine ID: Chromium Idasanutlin picolinate and biotin combination improves glucose metabolism in treated, uncontrolled overweight to obese patients with type 2 diabetes. Diabetes Metab Res Rev 2008,24(1):41–51.PubMedCrossRef Competing interests HLL and TNZ have received research funding and/or acted as consultants to raw material suppliers, nutraceutical and dietary supplement companies, including Ultimate Wellness Systems Inc, and Integrity Nutraceuticals Inc. Author’s contributions HLL and TNZ contributed to the design and coordination of the study, drafting the manuscript, as well as oversight of data collection and analyses.