But this is not to treat them. A study published on Tuesday (10 / 5) in a journal that can be accessed publicly, BioMed Central's Breast Cancer Research, showed that some types of coffee may be successful in reducing the risk of breast cancer cases, especially antiestrogen-resistant estrogen-receptor (ER )-negative strains.
In the year 2010 in Canada, breast cancer kills about 100 women and one man every week.
In the study, researchers compared lifestyle factors, including consumption of coffee, among age-with the affected and not affected by breast cancer, found that coffee drinkers less affected by cancer, although they note that other lifestyle factors that affect breast cancer rates, including age of menopause, exercise, weight, education and family history.
After looking at other variables that can cause cancer, it seems that the effect of coffee consumption is only useful to prevent ER-negative cancers.
"Often there is conflicting information about the positive effects of coffee," the researchers from the Karolinska Institutet said. They noted a study in Germany showed the same general trend, but the relationship is weak.
They also say, coffee mechanisms that prevent cancer, and compounds involved, remains unclear.
"We suspect that this might be something to do with the way coffee is prepared, or the preferred type of coffee beans. What is clear is not related to phytoestrogens in the coffee because there was no reduction in incidence of ER-positive cancers in this study." *
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