Handling Poultry Tied to Liver/Pancreatic Cancers

July 1, 2014 by Michael Greger M.D. in News with 15 Comments

Thousands of Americans continue to die from asbestos exposure decades after many uses were banned since the cancers can take years to show up. We are now in the so-called “third wave” of asbestos-related disease. The first wave was in the asbestos miners, which started in the 1920s. The second phase was in the workers—the ship-builders and construction workers that used the stuff in the ’30s, ’40s, and ’50s.

Now, as buildings “constructed with asbestos over the past six decades begin to age and deteriorate,” not only are workers at risk, but “potential also exists for serious environmental exposure to asbestos among residents, tenants and users of these buildings, such as school children, office workers, maintenance workers, and the general public.”

“The Centers for Disease Control, the American Academy of Pediatrics, and the U.S. Environmental Protection Agency have projected that over the next 30 years approximately 1,000 cases of mesothelioma and lung cancer will occur among persons in the United States exposed to asbestos in school buildings as school children.”

To see if something is carcinogenic, we study those who have the most exposure. That’s how we learned about the potential cancer-causing dangers of asbestos, and that’s how we’re learning about the potential cancer-causing dangers of poultry viruses. For years I’ve talked about the excess mortality in poultry workers associated with these wart-causing chicken cancer viruses that may be transmitted to those in the general population handling fresh or frozen chicken (See Wart Cancer Viruses in Food). Last year I talked about the largest study at the time “confirming the findings of three other studies to date that workers in poultry slaughtering and processing plants have increased risk of dying from certain cancers,” that also added penis cancer to the risks linked to poultry exposure (See Poultry and Penis Cancer). That was looking at 20,000 poultry workers. Well, we have yet another study, now looking at 30,000.

The purpose of the study, profiled in my video, Poultry Tied to Liver and Pancreatic Cancer, was to test the hypothesis that exposure to poultry cancer-causing viruses that widely occurs occupationally in poultry workers—not to mention the general population—may be associated with increased risks of deaths from liver and pancreatic cancers. They found that those who slaughter chickens have about nine times the odds of both pancreatic cancer and liver cancer.

Just to put this in context, the most carefully studied risk factor for pancreatic cancer, one of our deadliest cancers, is cigarette smoking. Even if we smoke for more than 50 years, though, we “only” about double our odds of pancreatic cancer. Those who slaughter poultry appear to have nearly nine times the odds.

For liver cancer the most well-known and studied cause is alcohol. Those who consume more than four drinks a day have triple the odds of liver cancer. As with pancreatic cancer, poultry slaughtering appears to increase one’s odds of getting liver cancer nine-fold. Thus, the cancer-causing viruses in poultry may explain the increasing risk of death from liver and pancreatic cancers.

There are diseases unique to the meat industry like the newly described “salami brusher’s disease” that affects those whose job it is to wire brush off the white mold that naturally grows on salami for eight hours a day, but most diseases suffered by meat workers are more universal. The reason the connection between asbestos and cancer was so easy to nail down is that asbestos caused a particularly unusual cancer, which was virtually unknown until there was widespread asbestos mining and industrial use. The pancreatic cancer one might get from handling chicken, however, is the same pancreatic cancer one might get smoking cigarettes, so it’s more difficult to tease out a cause-and-effect-relationship. Bottom line: despite the extremely high risks of deadly cancers, don’t expect an asbestos-type ban on Kentucky Fried Chicken anytime soon.

I’ve addressed this topic before. See:

It’s ironic that the meat industry wants to add viruses to meat (Viral Meat Spray) to combat fecal bacterial contamination. I’d take that over their other bright idea any day, though (Maggot Meat Spray).

A human wart virus, HPV, can be combated with green tea (Treating Genital Warts with Green Tea), as well as by plant-based diets in general (Why Might Vegetarians Have Less HPV?).

Although workers with the most poultry exposure appear to suffer the greatest excess mortality, increased deaths from cancer are also found in other slaughterhouse workers. More on that in Eating Outside Our Kingdom.

-Michael Greger, M.D.

PS: If you haven’t yet, you can subscribe to my free videos here and watch my live year-in-review presentations Uprooting the Leading Causes of Death and More Than an Apple a Day.

Image Credit: Peter Cooper / Flickr

Improving Attractiveness in Six Weeks

June 26, 2014 by Michael Greger M.D. in News with 4 Comments

Inadequate fruit and vegetable consumption may kill millions around the globe every year, so the public health community is not beyond “appealing to vanity.”

How can we tell if someone’s healthy? You can look for that golden glow that comes from the carotenoids in fruits and vegetables, found to increase the attractiveness of African, Asian, and Caucasian faces. In my video, Eating Better to Look Better, you can see some “before-and-after” shots, before and after increased consumption of fruits and vegetables. Most think the pictures representing the greater fruit and veggie group appear healthier and more attractive.

College students who went from three servings a day to the recommended minimum of nine servings a day for just six weeks were able to significantly improve their skin color, though it’s possible smaller dietary changes could help as well.

Can’t we just swallow supplements instead of salads? See my video Produce, Not Pills, to Increase Physical Attractiveness.

Public health advocates hope that research suggesting healthy eating may “affect mate choice and sexual selection” could provide a powerful message for promoting healthy eating. Their hope is to boost fruit and veggie intake up to 13 servings a day.

And while a rosy glow associated with cardiovascular health in the face and lips can also increase one’s appearance of healthfulness and attractiveness, the color red can also reduce junk food intake. People drink less soda from cups with red stickers than from cups with blue stickers, and eat less from red plates than from blue or white plates. How crazy is that? Researchers speculate that it’s because our brains are subconsciously thinking “red traffic lights, stop-signs, red alert,” and therefore give us pause when we see the color red while eating.

I previously covered this topic in Golden Glow and Rosy Glow, though I’m so glad we now have data from people of color as well.

I’m certainly not above appealing to vanity. Whatever it takes to get people healthy. Hence videos like:

50 Shades of Greens describes a similar tactic to promote more plant-based eating by appealing to sexual function and performance.

-Michael Greger, M.D.

PS: If you haven’t yet, you can subscribe to my free videos here and watch my live year-in-review presentations Uprooting the Leading Causes of Death and More Than an Apple a Day.