What Explains the Egg-Cancer Connection

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The explanation egg consumption is related to elevated most cancers threat often is the TMAO, thought of the “smoking gun” of microbiome-disease interactions.

“We’re strolling communities comprised not solely of a Homo sapiens host, but additionally of trillions of symbiotic commensal microorganisms throughout the intestine and on each different floor of our our bodies.” There are extra bacterial cells in our intestine than there are human cells in our total physique. In reality, solely about 10 p.c of the DNA in our physique is human. The remaining is in our microbiome, the microbes with whom we share with the “strolling group” we name our physique. What do they do?

Our intestine micro organism microbiota “function a filter for our largest environmental publicity—what we eat”—and, “technically talking, meals is a international object that we take into our our bodies” by the pound daily. The “microbial group inside every of us considerably influences how we expertise a meal…Therefore, our metabolism and absorption of meals happens by way of” this filter of micro organism.

Nonetheless, as you’ll be able to see at 1:22 in my video How Our Gut Bacteria Can Use Eggs to Accelerate Cancer, if we eat a number of meat, together with poultry and fish, milk, cheese, and eggs, we are able to foster the expansion of micro organism that convert the choline and carnitine in these meals into trimethylamine (TMA), which might be oxidized into TMAO and wreak havoc on our arteries, growing our threat of coronary heart assault, stroke, and demise.

We’ve known about this “troublesome” transformation from choline into trimethylamine for greater than 40 years, however that was means earlier than we realized in regards to the coronary heart illness connection. Why have been researchers involved again then? As a result of these methylamines would possibly kind nitrosamines, which have “marked carcinogenic exercise”—cancer-causing exercise. So the place is choline found in our food regimen? Largely from meat, eggs, dairy, and refined grains. The hyperlink between meat and most cancers in all probability wouldn’t shock anybody. In reality, simply because of the industrial pollution, like PCBs, youngsters in all probability shouldn’t eat greater than about 5 servings a month of meats like beef, pork, or hen mixed. However, what about most cancers and eggs?

Research going again to the Nineteen Seventies hinted at a correlation between eggs and colon most cancers, as you’ll be able to see at 2:45 in my video. That was primarily based simply on so-called ecological information, although, displaying that international locations eating extra eggs tended to have increased most cancers charges, however that may very well be on account of one million elements. It wanted to be put to the check.

This testing started within the 80s, and, by the Nineteen Nineties, 15 research had been printed, of which 10 suggested “a direct affiliation” between egg consumption and colorectal most cancers, “whereas 5 discovered no affiliation.” By 2014, dozens extra research had been printed, confirming that eggs could certainly be enjoying a task within the improvement of colon most cancers, although no relationship was found between egg consumption and the event of precancerous polyps, which “suggested that egg consumption may be concerned within the promotional” stage of most cancers progress—accelerating most cancers progress—moderately than initiating the most cancers within the first place.

This brings us to 2015. Maybe it’s the TMAO constituted of the choline in meat and eggs that’s promoting most cancers progress. Certainly, within the Ladies’s Well being Initiative examine, ladies with the best TMAO ranges of their blood had roughly thrice higher threat of rectal most cancers, suggesting that TMAO ranges “could function a possible predictor of elevated colorectal most cancers threat.”

As you’ll be able to see at 4:17 in my video, although there could be extra proof for elevated breast most cancers threat with egg consumption than prostate most cancers threat, the one different examine up to now on TMAO and most cancers looked at prostate most cancers and did certainly discover a increased threat.

“Weight-reduction plan has lengthy been considered a major consider well being; nevertheless, with the microbiome revolution of the previous decade, now we have begun to know how food regimen can” have an effect on the forwards and backwards between us and the remainder of us inside, and the entire TMAO story is “a smoking gun” in intestine bacteria-disease interactions.

Since choline and carnitine are the first sources of TMAO manufacturing, the logical intervention technique may be to scale back meat, dairy, and egg consumption. And, if we eat plant-based for lengthy sufficient, we are able to truly change our intestine microbial communities such that we could not be capable to make TMAO even when we attempt.

“The speculation of ‘you might be what you eat’ lastly is supported by scientific proof.” We could not must eat wholesome for lengthy, although. Quickly, Huge Pharma hopes, “we could but ‘drug the microbiome’…as a means of selling cardiovascular well being.”

What did the egg trade do in response to this info? Distort the scientific document. See my video Egg Industry Response to Choline and TMAO.


This isn’t the primary time the egg trade has been caught within the act. See, for instance:

For background on TMAO see my authentic protection in Carnitine, Choline, Cancer, and Cholesterol: The TMAO Connection after which discover out How to Reduce Your TMAO Levels. Additionally, see: Flashback Friday: How to Reduce Your TMAO Levels.

That is all a part of the microbiome revolution in drugs, the underappreciated position our intestine flora play in our well being. For extra, see: 

In well being,

Michael Greger, M.D.

PS: If you happen to haven’t but, you’ll be able to subscribe to my free movies here and watch my stay displays:



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