Love Your Kebabs and Sausages? Eating Red and Processed Meat Regularly Might Cause Colorectal Cancer

A diet that regularly includes red meat, sausages, bacon, salami and other processed meats may have implications beyond heart health and weight. Research has found an association between higher consumption of red and processed meat and a greater risk of colorectal cancer, which affects the colon or rectum.

This does not mean that eating meat occasionally will cause cancer. The concern is mainly about regular and higher consumption over time, particularly of processed meat.

 

 

 

View this post on Instagram

A post shared by Neeraj Dhamija (@ndcares4u)

What Counts As Red And Processed Meat?

Red meat includes unprocessed meat from mammals, such as beef, pork, lamb and mutton. It can be fresh, minced or frozen.

Processed meat is different. It refers to meat that has been changed through methods such as salting, curing, fermentation or smoking to improve flavour or preservation. Examples include sausages, ham, bacon, salami, corned beef and some canned meat products.

So, processed meat is not limited to one type of meat. Even some products made from poultry can fall into this category if they undergo processing methods such as curing or smoking.

Why Is Colorectal Cancer Linked With Meat Intake?

The International Agency for Research on Cancer (IARC), part of the World Health Organization, has evaluated the evidence on red and processed meat.

IARC classifies processed meat as carcinogenic to humans, based on sufficient evidence that its consumption can cause colorectal cancer. Red meat is classified as probably carcinogenic to humans, with limited evidence linking its consumption to colorectal cancer.

“It is important to understand what these classifications mean. They describe the strength of evidence that an exposure can cause cancer, not the size of the risk from a particular serving or how dangerous it is compared with another carcinogen,” says Dr Neeraj Dhamija, Surgical Gastroenterologist at Sir Ganga Ram Hospital, New Delhi.

Also Read: No Ultra-Processed Foods For 30 Days? Expert Explains What Happens To Your Body

The Amount And Frequency Matter

The relationship is not simply about whether a person has ever eaten red meat or processed meat.

According to WHO's summary of the evidence, the risk associated with processed meat generally increased with the amount consumed. An analysis of 10 studies estimated that eating 50 grams of processed meat every day was associated with about an 18% increase in colorectal cancer risk.

For red meat, the evidence is less conclusive. WHO notes that if the observed association were causal, the data suggest that eating 100 grams of red meat daily could increase colorectal cancer risk by about 17%.

These figures describe changes in relative risk and should not be interpreted as meaning that a person eating a particular amount has a 17% or 18% chance of developing cancer.

What Happens During Processing And Cooking?

Researchers have proposed several possible mechanisms through which meat may contribute to colorectal cancer risk.

Processing methods such as curing and smoking can lead to the formation of certain potentially carcinogenic compounds, including N-nitroso compounds. Cooking meat at very high temperatures, particularly when it is grilled, barbecued or pan-fried, can also produce compounds such as heterocyclic aromatic amines and polycyclic aromatic hydrocarbons.

However, the relationship between meat, cooking methods and cancer risk is complex, and not every aspect is fully understood.

Does This Mean You Have To Stop Eating Meat?

Not necessarily.

Red meat provides useful nutrients, including protein, iron, zinc and B vitamins. WHO also notes that meat can be part of a healthy diet. The concern is about regular consumption, particularly higher intake of processed meat, rather than suggesting that everyone must completely eliminate meat.

A practical approach is to avoid making processed meat a routine part of your diet. Foods such as sausages, bacon, salami and other cured meats can be eaten less frequently, while meals can include a wider variety of plant-based foods.

Also Read: "I Don't Eat Meat, So Why Is My Cholesterol High?" Doctor Explains the Mystery

What Can You Eat More Often?

A balanced diet can include plenty of vegetables, fruits, pulses, whole grains and other fibre-rich foods.

Dietary fibre is particularly relevant to colorectal health. IARC notes that evidence supporting a protective role for dietary fibre against colorectal cancer is convincing. Dietary patterns containing more whole grains, vegetables and fruit and less red and processed meat have also been associated with lower cancer risk.

This means the focus should not simply be on removing one food. The overall pattern of eating matters.

Don't Ignore Bowel Changes

Diet is only one factor associated with colorectal cancer risk. Age, family history, certain bowel conditions, physical activity, body weight, alcohol consumption and smoking can also influence risk.

Persistent changes in bowel habits should not be automatically blamed on diet. Blood in the stool, unexplained weight loss, persistent abdominal discomfort, a lasting change in bowel habits or unexplained anaemia should be discussed with a doctor.

Final Word

Eating red meat occasionally is not the same as consuming large amounts regularly. However, evidence shows that regular consumption of processed meat is linked to colorectal cancer, while red meat is also associated with increased colorectal cancer risk, although the evidence is less definitive. The practical message is simple: keep processed meat to a minimum, moderate red meat intake, and make vegetables, pulses, whole grains, and other fibre-rich foods a regular part of your diet.