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Int J Sport Nutr this website Exerc Metab 2000,10(4):452–63.PubMed 56. Jager R, Metzger J, Lautmann K, Shushakov V, Purpura M, Geiss KR, Maassen N: The effects of creatine pyruvate and creatine citrate on performance during high intensity exercise. J Int Soc Sports Nutr 2008.,5(4): Competing interests The authors declare that they Aldol condensation have no competing interests. Authors’ contributions JG, AS, KK and DF contributed in writing and editing the manuscript along with concept and design, data acquisition, and data analysis and interpretation. JM, TB, JC, and JS contributed in writing and

editing the manuscript, as well as concept and design. All authors have read and approved the final manuscript.”
“Background Carcinogenesis is a complex process involving events at several levels of organization, including molecular, cellular and morphological. It can be divided into three main phases: initiation, promotion and progression [1]. Specifically in colorectal cancer, the initiation phase can be recognized by the formation of lesions in the bowel called aberrant crypt foci (ACF), which can develop into cancerous tissue [2, 3]. Such lesions have often been used as biomarkers of the initial phase of colorectal cancer in rats induced with 1,2-dimethylhydrazine (DMH) [4, 5]. The etiology of cancer is still much under discussion, but it is already known that certain identifiable factors are almost always involved in malignant neoplasms of a given type and, in the case of colon cancer, a close correlation has been found with genetic predisposition, environmental factors and lifestyle [6]. Control of the body weight and engagement in physical exercise have been stressed as factors protecting against colon cancer [7–10], while smoking, alcoholic drinks and fatty, fiberless diets are seen as risk factors.