Posted on 12/30/2009 1:06:40 PM PST by woollyone
Last week, someone mentioned the Bisphenol A (BPA) leaching tendencies of canned tomatoes. That was all it took to send me on a tear.
First, I looked deeper into the BPA issue. I’ve mentioned it before, and the battles over BPA content in plastics have gotten a lot of publicity, but after looking at the preponderance of evidence derived from recent animal trials, I’m not sure I can recommend using canned food at all anymore. Industry leaders say BPA is crucial for preventing direct contact between food and metal; they also say ditching the stuff would lead to far more botulism cases. That may be. But it’s undeniable that BPA has an effect on animals. Various dosages have different effects, and it’s unclear whether the animal models are relevant to human models, but the stuff does leach and it does impact the mammals that have been tested. A quick rundown (these are rodent studies unless otherwise noted) of dosages in µg/kg/day and the reported effects:
0.025 – Permanent changes to genital tracts in adult females with in utero exposure to BPA that only show up during adulthood.
1.0 – Ovarian cysts were seen in adult mice with prenatal exposure to BPA
2.0 – Pregnant mice fed normal levels of (read: in doses similar to the range “currently being consumed by people”) BPA, but not octylphenol (another xenoestrogen used in commercial products), bore males that developed enlarged prostates by adulthood.
2.4 – BPA exposures of pregnant rats (from gestation day 12 onward) and nursing rats (up until postnatal day 21) resulted in decreased testosterone levels in the testicles by nearly half.
2.5 – Given no further “treatment aimed at increasing tumor development” beyond fetal BPA administration, mice mammary glands were induced to develop carcinoma. Mice with prenatal exposure, then, were predisposed to breast cancer in adulthood.
10.0 – In male rats, low levels of BPA exposure affected the prostate epigenome (“genetic code” of the prostate), enough to render it especially susceptible to disease later in life. In female mice, exposure to BPA resulted in altered maternal behavior: BPA mothers expressed less interest in nursing and more time away from their pups when compared to the control corn oil group.
30.0 – A BPA dosage far below the human “tolerable daily intake” was apparently not tolerated especially well by rats; BPA “abolished and inverted” sexual differentiation of the brain and behavior.
50.0 (the official U.S. human exposure limit, as ordained by the EPA) – In nonhuman primates, continuous administration of BPA interfered in the formation of spine synapses in the hippocampus and prefrontal cortex. Spine synapse formation is especially critical in the regulation of mood and general cognition; government-approved levels of BPA were enough to “abolish” synapse formation in some of our closest primate relatives.
~snip~
Can I have all your canned food? I’m stocking up, and probably too old to worry about it.
I wonder if it makes a difference how long the stuff has been sitting around on the shelf.
HEAR HEAR
Ditto.
LOL! And a couple of cheers for irradiated meat. I like my burger medium rare.
Post #39 - RIGHT ON!!
“God people are wusses.”....
Bravo, I could not have said it better!
Tomatoes are very acid, by lining the cans they extend the storage life.
Yup.
Probably some balderdash from the non-GMO folks.
Yawn.
Joe Jackson. The 80’2 had some great music.
No, it's not safe. One should only eat 100% organic, raw, wild food one personally has foraged from untouched, old-growth forests. One should never eat anything one cannot personally vouch for from seed to fruit.
Otherwise, someday, one might die.
...maybe in light ink of some kind on one end or the other of each can, if I remember correctly.
Some 40 years ago, one of those studies came out with a cancer threat — from china dishes of the previous 20+ years that had a dark green design. Per the study, a cancer agent in the dark green dye used to make the design supposedly would seep through to the surface of plates and cups.
[My mother had a set of those that she used daily for 20 years. No one in the immediate family has ever had cancer.]
Well great, next time monsanto wants government to use agent orange you will be all set to sign up.
/wink
I guess this is why life expectancy has gone up since people only ate fresh, organic foods. Chi Chi’s went out of business because fresh, organic food killed so many people.
Actually-—I’ll just keep collecting-—LOL!
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