Studies are showing that Bt toxins found in Monsanto crops are harmful to mammalian blood by damaging red blood cells and more. RBC’s are responsible for delivering oxygen to the body tissues through blood flow.
Bacillus thuringensis (Bt) is a bacterium commonly used as a biological pesticide. It is a microorganism that produces toxic chemicals. It occurs naturally in the environment, and is usually isolated from soil, insects and plant surfaces. Prior to this study, Bt was thought to be toxic only to insects, but recent studies are proving otherwise.
Dr. Mezzomo and his team of Scientists from the Department of Genetics and Morphology and the Institute of Biological Sciences, at University of Brasilia recently published a study that involved Bacillus thuringensis (Bt toxin) and its effects on mammalian blood. According to the study, the “Cry” toxins that are found in Monsanto’s GMO crops like corn and soy, are much more toxic to mammals than previously thought. The study was published in the Journal of Hematology and Thromboembolic Diseases(1).
We do not support animal testing, and think it is unnecessary. It should really be a no brainer that GMO crops cause significant damage to human health. Studies that don’t require animal testing have already proven the dangers of GMO consumption. This study unfortunately required the use of Swiss Albino Mice if Bt was to be properly examined. At the same time, most of us know that the existence of GMOs is completely unnecessary.
Advances in genetic engineering promise the expression of multiple Cry toxins in Bt-plants, known as gene pyramiding. Therefore, studies on non-target species are requirements of international protocols to verify the adverse effects of these toxins, ensuring human and environmental biosafety.
Due to its growing use in agricultural activities, Bt presence hasalready been detected in different environmental compartments such as soil and water. Consequently, the bioavailability of Cry proteins has increased, and for biosafety reasons their adverse effects might be studied, mainly for non-target organisms. Studies are therefore needed to evaluate Bt toxicity to non-target organisms; the persistence of Bt toxin and its stability in aquatic environments; and the risks to humans and animals exposed to potentially toxic levels of Bt through their diet.(1)
Thus, we aimed to evaluate, in Swiss albino mice, the hematotoxicity and genotoxicity of four Bt spore-crystals…
Scientists tested levels ranging from 27 mg to 270 mg over a seven day period, it was remarkably evident that the Cry toxins were hemotoxic, even at the lowest doses administered. Hemotoxins destroy red blood cells, disrupt blood clotting and cause organ degeneration and tissue damage.
The number of RBC’s, (red blood cells) as well as their size, were significantly reduced, and so were the levels of hemoglobin for oxygen to attach to. Every factor regarding RBC’s indicated some level of damage for all levels of toxin administered and across all cry proteins. The tests clearly demonstrated that Cry proteins resulting from the Bt toxin were cytotoxic (quality of being toxic to cells) to bone marrow cells. Studies contiually show that these proteins kill blood cells bytargeting the cell membranes of RBC’s.
Cry1Ab (the protein produced in common Bt corn and soy) induced microcytic hypochromic anemia in mice, even at the lowest tested dose of 27 mg/Kg, and this toxin has been detected in blood of non-pregnant women, pregnant women and their fetuses in Canada, supposedly exposed through diet . These data, as well as increased bioavailability of these MCA in the environment, reinforce the need for more research, especially given that little is known about spore crystals’ adverse effects on non-target species (1)
Dr. Mezzomo and his team are not the only group of scientists to discover the harmful effects of Bt toxins. Professor Joe Cummins, Professor Emeritus of Genetics at the University of Western Ontario has also studied it (2)(3)(4). He concluded that that there is sufficient evidence that the Bt toxin will impact directly on human health through damaging the ileum, which is the final section of the small intestine that is responsible for the absorption of vitamin B12. He also points out that the Bt cry toxin gene has not been proven to be the same as the natural bacterial gene. As mentioned in the first paragraph, it occurs naturally in the environment, usually isolated from soil, insects and plant surfaces.
It seems that everyday brings forth new information regarding GMO’s. We have so much evidence that points to just how harmful these foods are, yet they continue to be mass produced and the corporations that develop them are constantly protected. The truth still remains, you still have a choice as to what you put into your body. I encourage everybody reading this to further their research, most ‘industries’ we have on the planet today really aren’t necessary, we are just made to believe that they are.
A new study, yet to receive any media attention, reveals the “leukemogenic” properties of the Bt toxin biopesticides engineered into the vast majority of GMO food crops already within the US food supply.
Last September, the causal link between cancer and genetically modified food was confirmed in a French study, the first independent long-term animal feeding study of its kind. The disturbing details can be found here: New Study Finds GM Corn and Roundup Causes Cancer In Rats
Now, a new study published in the Journal of Hematology & Thromboembolic Diseases indicates that the biopesticides engineered into GM crops known as Bacillus Thuringensis (Bt) or Cry-toxins, may also contribute to blood abnormalities from anemia to hematological malignancies (blood cancers) such as leukemia.[i]
A group of scientists from the Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasilia, Brasilia/DF, Brazil set out to test the purported human and environmental biosafety of GM crops, looking particularly at the role that the Bt toxin found within virtually all GM food crops plays on non-target or non-insect animal species.
The research was spurned by the Brazilian Collegiate Board of Directors of the National Sanitary Surveillance Agency (ANVISA), who advocated in 2005 for evaluations of toxicity and pathogenicity of microbiological control agents such as Bt, given that little is known about their toxicological potential in non-target organisms, including humans.
While Bacillus Thurigensis spore-crystals have been used since the late 1960′s in agriculture as a foliar insecticide, it was only after the advent of recombinant DNA biotechnology that these toxin-producing genes (known as delta endotoxins) were first inserted into the plants themselves and released into commercial production in the mid-90′s, making their presence in the US food supply and the bodies of exposed populations ubiquitous.
What the new study revealed is that various binary combinations and doses of Bt toxins target mammalian cells, particularly the erythroid (red blood cell) lineage, resulting in white and red blood cell changes indicative of significant damage. Some of these adverse changes included anemia, and suppression of bone marrow proliferation and abnormal lymphocyte changes consistent with some types of leukemia.
The researchers also found that one of the prevailing myths about the selective toxicity of Bt to insects, the target species, no longer holds true:
It has been reported that Cry toxins exert their toxicity when activated at alkaline pH of the digestive tract of susceptible larvae, and, because the physiology of the mammalian digestive system does not allow their activation, and no known specific receptors in mammalian intestinal cells have been reported, the toxicity these MCAs to mammals would negligible [8,22,23]. However, our study demonstrated that Bt spore-crystals genetically modified to express individually Cry1Aa, Cry1Ab, Cry1Ac or Cry2A induced hematotoxicity, particularly to the erythroid lineage. This finding corroborates literature that demonstrated that alkali-solubilized Bt spore-crystals caused in vitro hemolysis in cell lines of rat, mouse, sheep, horse, and human erythrocytes and suggested that the plasma membrane of susceptible cells (erythrocytes, in this case) may be the primary target for these toxins 
The study also found:
1) That Cry toxins are capable of exerting their adverse effects when suspended in distilled water, not requiring alkalinization via insect physiology to become activated as formerly believed.
2) That a dose of Cry1Ab as low as 27 mg/kg, their lowest tested dose, was capable of inducing hypochromic anemia in mice – the very toxin has been detected in blood of non-pregnant women, pregnant women and their fetuses in Canada, supposedly exposed through diet.
3) Whereas past reports have found that Bt toxins are generally nontoxic and do not bioaccumulate in fatty tissue or persist in the environment, the new study demonstrated that all Cry toxins tested had a more pronounced effect from 72 hours of exposure onwards, indicating the opposite is true.
The authors noted their results “demonstrate leukemogenic activity for other spore-crystals not yet reported in the literature.”
[R]esults showed that the Bt spore-crystals genetically modified to express individually Cry1Aa, Cry1Ab, Cry1Ac or Cry2A can cause some hematological risks to vertebrates,increasing their toxic effects with long-term exposure. Taking into account the increased risk of human and animal exposures to significant levels of these toxins, especially through diet, our results suggest that further studies are required to clarify the mechanism involved in the hematotoxicity found in mice, and to establish the toxicological risks to non-target organisms, especially mammals, before concluding that these microbiological control agents are safe for mammals.
Did you get that? Their conclusion is that it is premature to consider GM toxins to be safe in mammals. Billions have already been exposed to Bt toxins, in combination with glyphosate-based herbicide formulations such as Roundup, and yet, most biotech research scientists and industry regulators still claim they are unequivocally safe. This has much to do with the well-known relationship that biotech corporations like Monsanto have with so-called ‘check book’ science firms who are basically paid to obfuscate adverse health outcomes of their products, such as the GMO-Cancer link. [also see: Monsanto-Funded Science Denies Emerging Roundup Cancer Link]
Consider also that the question of combined toxicity of Cry toxins and glyphosate-based residues within plants have not been sufficiently explored, and that glyphosate exposure has already been linked to non-Hodgkins lymphoma and hairy cell leukemia in the biomedical literature.[ii]
The reality is that we no longer have time to wait around for additional research to accumulate on the adverse health effects of GMOs, especially considering the biotech industry has far more capital to infuse into their own faux research on the topic.
Some, in fact, argue that we should not be waiting around for the corrupt legislative process to compel manufacturers to label GMOs, rather, we should be fighting to BAN THEM NOW, advocating for the precautionary principle before its too late.
In the meantime, you can join the growing movement to March Against Monsanto, occurring world wide on May 25th, as a way of expressing your desire for real change, as well as vote with your forks, the only immediately effective tool we have against biological and environmental gene-ocide articulated by the dominant GMO-based food system.
Additional important research resources on GreenMedInfo.com
Surprise! Monsanto-Funded Research Finds Their Products Safe
Health Guide: GMO Research
[i] Bélin Poletto Mezzomo, Ana Luisa Miranda-Vilela, Ingrid de Souza Freire, Lilian Carla Pereira Barbosa, Flávia Arruda Portilho. Hematotoxicity of Bacillus thuringiensis as Spore-crystal Strains Cry1Aa, Cry1Ab, Cry1Ac or Cry2Aa in Swiss Albino Mice. Journal of Hematology and Thromboembolic Diseases. 2013
[ii] Lennart Hardell, Mikael Eriksson, Marie Nordstrom. Exposure to pesticides as risk factor for non-Hodgkin’s lymphoma and hairy cell leukemia: pooled analysis of two Swedish case-control studies. Leuk Lymphoma. 2002 May;43(5):1043-9. PMID: 12148884