A new study published in International Journal of Cancer 'contradicts the results achieved in previous
A review of studies conducted by researchers from the School of Public Health, Harvard University (USA) and published in the latest issue of the International Journal of Cancer (2009; 124:1662-1668) concluded that, Unlike revealed by previous studies, indicates coffee consumption is not associated with a decreased risk of colorectal cancer.
As explained by Dr. Youjin Ho, director of research, "case-control studies identified an inverse relationship between coffee consumption and risk of colorectal cancer, which then was not confirmed by prospective cohort studies with a different design" .
To carry out its work, the team conducted a systematic review of prospective cohort studies to analyze the relationship between coffee consumption and colorectal cancer. The authors identified 12 studies with a total of 646,848 participants and 5,403 patients with colorectal cancer.
The combination of studies comparing high and low intake of coffee, did not find the existence of a statistically significant relationship between consumption of tea and colorectal cancer risk.
Moreover, the four studies conducted in the U.S., five made in Europe and three in Japan, and the nonexistence of the relationship between cancer and coffee consumption, showed that the data from each country were quite similar. There was also no significant differences by gender and tumor location.
Instead, researchers found an inverse relationship between coffee consumption and cancer of the colon in women who had a 21% lower risk than other participants. For Japanese women, the risk reduction was set at 38%.
News read on www.aegastro.es
Source Magazine April 2009 International Journal of Cancer.
