Reasons to seek out pastured and soy free whenever possible:

• The U.S. Department of Agriculture did a study in 1993 where hens were taken off pasture and fed a diet of soy, corn, wheat or cottonseed meal. When the chickens were not fed their natural diet they didn’t lay as many eggs and the few chicks that developed from the eggs had higher rates of death and illness.
• Soy is one of the most common food allergens and many people who think they are sensitive to eggs are just allergic to the soy that concentrates in the yolks.
• Chickens are omnivores and are actually descendents of Velociraptor, a small meat eating dinosaur. Chickens are designed to eat mice, snakes, bugs, worms, and insects. It is not natural for their diet to be 95% “vegetarian” corn and soy.
• Chickens that eat corn and soy will have an imbalanced omega 3/6 ratio, making these poultry products inflammatory foods for humans.  A pastured chicken that is free to roam on grass and eat bugs will have a 3/1 ratio of omega 6/3 which means eating these chickens and their eggs will be restorative for health. The average American is very inflamed with a 20/1 ratio of omega 6/3, which is a good indicator of future health risk for heart disease, cancer and diabetes.
• Commercial chicken feed often uses recycled vegetable oil from restaurant fryers as a filler. Some experts believe that eating factory farmed chicken has similar effects on the body as drinking soybean oil.
• Research indicates that soy isoflavones are transferred into the yolks of chickens which are fed a diet concentrated with soy feed. When humans eat soy fed chickens these estrogen mimicking hormones can accumulate causing various health problems.
• Soy contains isoflavones that accelerate growth in chickens by depressing thyroid function creating unnatural weight gain which increases market value of fowl.
• When chickens are fed soy, high concentrations of estrogen mimicking hormones end up in the yolks causing disruption in human fertility, upsetting the delicate hormonal balance in men and women.
• Most soy in the USA is genetically modified which causes abnormalities in hampster studies after several generations. GMO’s have not been adequately tested on humans and eating soy filled eggs could cause unintended changes in future human DNA.
• Children are especially sensitive to hormones from soy contaminated chicken and can have irregularities in sexual development.
• Pastured chicken that are eating worms and insects have more omega-3 fatty acids, vitamin E, vitamin A, folate and vitamin B-12 than caged, stressed, and overcrowded chickens. Pastured eggs are higher in the anti-oxidants lutein and zeaxanthin which helps in prevention of macular degeneration and colon cancer.
• Eggs from pastured hens have vitamin D levels 3-6 times higher than the eggs from hens raised in confinement. Pastured hens are exposed to direct sunlight, which their bodies convert to vitamin D. When chickens have enough vitamin D they have higher egg production. A high soy diet can even deplete stored of vitamin D in chickens and humans.
• Uncluttered free roaming Pastured chickens are very sustainable and create their own nitrogen rich fertilizer which helps grow more grass and other vegetables.
• Rainforests are being clear cut in South America for the production of soybeans to feed chickens in high volume over-crowded operations.
  

  Conditions at some large scale CAFO operations

Sources:

Balanced Bites podcast with Karen Pendergrass

http://www.ncbi.nlm.nih.gov/pubmed/11758913

http://www.westonaprice.org/childrens-health/eat-eggs-and-have-chicken-too

Ask the Low Carb Experts with Dr. Kayla Daniel

www.marksdailyapple.com/a-beginners-guide-to-backyard-chickens

http://www.eatwild.com/animals.html

http://raypeat.com/articles/articles/unsaturated-oils.shtml

http://www.guardian.co.uk/environment/2010/nov/11/chefs-soy-sustainable-farming-rainforest

http://www.nal.usda.gov/afsic/pubs/ofp/ofp.shtml

http://www.huffingtonpost.com/jeffrey-smith/genetically-modified-soy_b_544575.html

Don’t Be Soy Sorry:

If you want to read more about how soy affects us, read this great book: