Processed Meat Linked to Increased Cancer Risks, Study Suggests
Recent research indicates a connection between the consumption of processed meats, such as ham, sausages, and bacon, and a higher risk of certain cancers. While previous studies have confirmed that processed meat can lead to colon cancer, this new study focused on cancers in the upper digestive system, where links have been less clear.
Researchers from the European Prospective Investigation into Cancer and Nutrition (EPIC) followed the health and dietary habits of over 450,000 individuals across Europe for an average of 14 years. The study group consisted of 131,426 men and 318,686 women.
During the study, 876 participants were diagnosed with stomach cancer, and 215 developed esophageal adenocarcinoma, a type of cancer that affects the tube connecting the mouth to the stomach.
The study differentiated stomach cancers based on their location: the upper part of the stomach and the lower part. It also categorized tumors based on their cell structure—intestinal tumors form more organized structures, while diffuse tumors have more scattered cells.
Findings revealed that for every additional 30 grams of processed meat consumed daily, the risk of stomach cancer rose by 9%. Similarly, this extra consumption was associated with a 13% increased risk of esophageal adenocarcinoma. To put this into perspective, a typical slice of deli ham is about 28 grams.
Interestingly, the research highlighted a gender difference in cancer risk. For men, only processed meat consumption was significantly linked to stomach cancer. In contrast, women showed risk elevations when consuming both processed and white meats.
These conclusions are consistent with existing health guidelines, particularly those from the World Health Organization’s International Agency for Research on Cancer, which has classified processed meats as a known human carcinogen due to strong links with colorectal cancer.
However, health organizations have noted a less definitive but possible relationship between processed meats and stomach cancer.
The researchers acknowledged that their study relied on self-reported diets, which may introduce inaccuracies in participants’ meat consumption records. They emphasize the need for further research to confirm these findings and to explore other risk factors, such as specific stomach infections.
The study’s results were published in the International Journal of Cancer.
