| |
| | BioMed Central | Full text | Dietary fiber showed no preventive effect against colon and rectal cancers in Japanese ... |
 | | However, care should be taken in ascertaining the effect of dietary factors in carcinogenesis, including colorectal carcinogenesis, as the protective effects of dietary factors on carcinogenesis may not only be based upon the balance of the overall diet, but also on the interaction of specific dietary components, such as dietary fiber, nutrients and other foods. |
 | | The number of survey subjects and the population in each prefecture in 1995 varied from 162 to 3,057 (Table 1), and from 816,008 to 11,734,920, respectively. |
 | | The population by age group of each prefecture was obtained from the Japanese Census Report [12]. |
| www.biomedcentral.com /1471-2407/1/14 (2180 words) |
|