“To our knowledge this is the first prospective study of heme iron intake and bladder cancer risk,” the researchers wrote. “The strengths of this study include its large size, prospective design and inclusion of potential confounding variables.”
In light of inconsistent results from previous epidemiological studies, Jakszyn and her team investigated the association between red meat consumption, dietary nitrosamines and heme iron and the risk of bladder cancer among participants of the European Prospective Investigation into Cancer and Nutrition (EPIC). The result was no overall association between intake of red meat, nitrosamines or heme iron and bladder cancer risk.
The associations did not vary by sex, high vs. low risk bladder cancers, smoking status or occupation, according to the analysis. At the same time, when assessing red and processed meat separately, there were no differences observed.
EPIC is a study of 520,000 people from Denmark, France, Germany, Greece, Italy, The Netherlands, Norway, Spain, Sweden and the United Kingdom that investigates the relationships between diet, nutritional status, lifestyle and environmental factors and the incidence of cancer and other chronic diseases.
To read the complete details and methods of the study, visit http://bit.ly/ikomGx.