If you choose to eat red and processed meats, just how often do you bite into that bologna sandwich or hot dog? What type of pork and beef do you eat? Is it low fat? What brand?
These are the kinds of answers that studies need in order to better understand how processed meat increases the risk of cancer, says Amanda Cross, speaking at our research conference today.
Cross, a scientist at Imperial College London, noted that the research clearly shows even small amounts of processed meat — and high consumption of red meats — increase risk of colorectal cancer. A study by Cross also suggests that processed meat increases risk of lung cancer; while diets high in red meat risk increase risk for esophagus and liver cancers.
Historically, the questionnaires used in studies of dietary intake only asked a couple questions on how much red and/or processed meats people typically ate. Now the science needs more.
When it comes to processed meat, researchers are looking closely at nitrate and nitrite. These chemicals, added to many processed meats, lead to potential carcinogens known as N-nitroso compounds. For burgers and other red meats, grilling and broiling them well-done can form heterocylic amines (HCAs) and polycyclic aromatic hyrdocarbons (PAHs), also potential carcinogens. Continue reading
Well, it sure got people’s attention, we’ll say that for sure. But is it accurate?
Last week a blog post from an organization called the Institute for Natural Healing picked up on one of the 10 AICR/WCRF Recommendations for the Prevention of Cancer first published back in 2007. That blog post has since gone viral (it’s been shared tens of thousands of times across many different social media platforms), and has attracted the attention of the news media, who have now approached us for comment.
Neither AICR nor our international partners, the World Cancer Research Fund, have any connection to the Institute for Natural Healing, whose website sells “natural” dietary supplements to treat conditions ranging from cancer to heart disease to male potency. (AICR/WCRF’s report and continuous updates have found that when it comes to cancer, it’s better to rely on whole diets, not dietary supplements, to reduce your risk.)
Last week’s INH blog post specifically spotlighted the AICR/WCRF recommendation to avoid processed meat (a category which includes hot dogs, sausage, bacon and cold cuts — for more information, see the AICR Blog post “What is Processed Meat, Anyway?”). That recommendation, at least, is real. It is the conclusion of an independent panel of leading scientists convened by AICR/WCRF who, following the largest, most comprehensive review of international research ever undertaken, judged the evidence that processed meat increases the risk of colorectal cancer to be convincing. This review was published in 2007 and was subsequently confirmed in 2011. Continue reading
Cutting down on hot dogs, sausages and bacon may help you avoid a premature death from cancer, along with heart disease and other causes, suggests a new study of almost half a million Europeans.
The study, published online in BMC Medicine, calculated that 3.3 percent of the deaths in the study could have been prevented if participants ate less than 20 grams of processed meat – about equal to a piece of bacon – every day.
AICR’s expert report and its continuous updates show that both processed meat and high amounts of red meat increase the risk of colorectal cancer.
The BMC Medicine study investigated the links between red meat, processed meat and mortality. They used data from the European Prospective Investigation into Cancer and Nutrition (EPIC) study, including approximately 450,000 participants from ten European countries. When the men and women entered the study, between the ages of 35 and 69, they were free of cancer and and heart disease. Continue reading