This past week has been full of controversy about the dangers of bacon and processed meats. Some are calling it “bacon-gate.” The world Health Organization (WHO) and its linked research group, the International Agency for Research on Cancer (IARC), classified bacon and hot dogs as “human carcinogens (Group 1).” That designation means they are causing cancer in the same way that tobacco and asbestos are classified as cancer-causing agents!

This caused quite a backlash around the globe. IARC had to release a clarification that “Category 1” describes the strength of the scientific evidence—rather than assessing the level of risk. To put this in perspective, smoking increases the relative risk of lung cancer by 2,500%, whereas eating two slices of bacon a day increases the relative risk of colorectal cancer by 18%.

So yes, cancer-causing factors are involved (and they can definitely cause cancer), but the relative risk, comparatively speaking, is low versus other chemical exposures. The chemicals involved are of two broad types. The first is heme. Red meat of all types include heme (the heme of hemoglobin—blood). Heme breaks down into the cancer-causing N-nitroso compounds. IARC classifies the “heme” as a probable carcinogen.

The second component consists of the nitrates and nitrites used to cure meats, which also turn into nitroso cancer-causing agents. It is the processed or cured products which are classified as the “Group 1 carcinogens.” Then, on top of that you have the acrylamides that come with grilling. Use of olive oil in grilling reduces the acrylamide formation.

Bottom line: There is definitely a concern that points more to reduced or more limited consumption than to complete abstinence. Moderation in all things, as my mother always said! We will be hearing a lot more about this in coming months, I am sure. For example, smoked versus cured or grilled food may be fine or better. Let’s see what the data show.

So, what about the good news?

As opposed to bacon, I recently learned about Bama, a village located in Guangxi, China, which is called the “home of longevity.” While there is one man in Bolivia documented to be 123 years old, the village of Bama boasts many residents over the age of 100 years—five times the international average. It is another “Blue Zone,” which I have discussed here in the past.

The villagers’ healthy diet is proposed as the major factor in their longevity. I can tell you that bacon is not a major component of the diet, but why do the residents live to a ripe old age, and typically without cancer or other diseases found in Western societies?

Several theories are proposed, ranging from the sunlight index (infrared/ultraviolet intensities “just right”); air (high concentration of negative-oxygen ions); water (naturally filtered from rivers and caves); magnetic field (very unusual and good, apparently); as well as the food, which is locally grown with lots of beneficial lactobacillus bacteria.

The local diet includes hemp seeds, pumpkin, bamboo shoots, yellow corn, beans, potatoes and whole grains, which provide organic and pollution-free food. It is a Mediterranean-style diet, low in red meats for sure, but including river fish and poultry.

Bottom line: Again, there is no simple answer! Bama is a beautiful, tranquil location in rural China—not a lot of stress. Yes, the diet is probably very good, but other factors are involved.

Bacon is not entirely bad, and we are not sure why Bama is such a healthy place. Limiting bacon and trying to emulate Bama can only be good.

Dr. Durie sincerely appreciates and reads all comments left here. However, he cannot answer specific medical questions and encourages readers to contact the trained IMF InfoLine staff instead. Specific medical questions posted here will be forwarded to the IMF InfoLine. Questions sent to the InfoLine are answered with input from Dr. Durie and/or other scientific advisors and IMWG members as appropriate, but will not be posted here. To contact the IMF InfoLine, call 800-452-CURE, toll-free in the US and Canada, or send an email to [email protected]. InfoLine hours are 9 am to 4 pm PT. Thank you.


As a result of induction therapy, transplant and revlimid maintenance, I have increased my red meat consumption to keep up my hemoglobin, at the recommendation of my oncologist. Don't we need hemoglobin, whether or not it can break down into cancer causing agents? Can we bolster hemoglobin with foods other than red meat?

Add new comment