The virulent attacks on genetically modified organisms (GMOs) or
genetically enhanced products on their supposed harmful effects on the
environment, on humans and animal health safety and even their allergenic
impact on the biological system have been proven false by the scientific
communities here and abroad.
A handout produced by the International Service for the Acquisition of
Agribiotech Applications (ISAAA), the global knowledge center on crop
biotechnology, presented 16 myths on biotechnology and scientific findings
of the New Zealand Royal Commission on Genetic Modification (RCGM).
(This paper will just pick half of the most popular myths.) The
handout was distributed to a large group of newsmen who toured the science
community of UP Los Baņos' Institute of Plant Breeding and SEARCA-Biotech
Information Center last Tuesday.
IPB Scientists Dr. Antonio Laurena and Eduardo Fernandez also said that
those opposing biotechnology for unfounded fears are depriving the farmers
and consumers options on beneficial crops to grow and food to eat thereby
making the country ever dependent on imported food and animal feeds, which
are themselves already products of biological engineering.
Their lectures sought to explain the process and results of biological
modification and why, contrary to popular though unfounded beliefs, these
are not harmful to humans, animals and the entire ecological system.
Myth No.1: that golden rice (being the staple of two billion people
in the world) will not produce health benefits that advocates claim was
found by RCGM to improve the nutritional (particularly iron and Vitamin A)
quality of rice thereby correcting the nutritional deficiencies of some
400 million world sufferers of Vitamin A deficiency in iron. It also
contained higher doses off beta carotene, known for getting rid of cancer
cells.
Myth No.2: L-tryptophan (an amino acid for building dietary protein
for brain function) produced from GM bacteria caused deaths in humans in
the US was later found by US courts as a manufacturing fault rather than
genetic modification. True, L-tryptophan produced by Showa Denko KK
(using vat fermenters, GM bacteria and purified by filtration) in 1989 led
to new illnesses such as painful and swollen muscles, rashes and gastro
intestinal problems and large numbers of white blood cells in the
body. This batch of L-tryptophan used not only a new GMO that
produced a more concentrated product but also different filtration system
using less charcoal that bypassed a membrane filtering step to purify the
product.
Myth No.3: Genetic modification causes bovine spongiform
encephalopathy (BSE) or the mad cow disease - a degenerative sickness
affecting the central nervous system of cattle reaching 178,000 cases
since its first confirmation in 1986 in Great Britain - epidomiologic data
suggested that BSE in Great Britain involved animal feed contamination
using meat and bone meal as protein source. In 1988, the UK
government enacted a law requiring all cattle suspected of suffering from
BSE to be destroyed and sent for diagnosis. In 1996, BSE was linked
with a new variant of CJD (Creutzfeldt-Jakob Disease), a slow degenerative
human disorder also affecting the central nervous system at the rate of
one case per one million people a year. In 1996 and 1997, the UK
Spongiform Encephalopathy Advisory Committee (SEAC) found causal
association between BSE and VCJD.
Myth No.4: Transgenic crops can cause allergies in humans and
animals, the Royal Society of UK - its independent national academy of
science - said "there is no evidence that GM foods cause allergenic
reactions. The allergenic risks posed by GM plants are in principle
no greater than those posed by conventionally derived crops and by plants
introduced from other areas of the world."
Myth No.5: Pythoestrogen levels in (roundup ready) herbicide
soybeans can cause breast cancer was found to have no causal relationship
between GM soybean produced by Monsanto and phytoestrogen-related risks
for women and children. The Swiss Working Group on Genetic
Engineering (SAG) found that the source of this information was a study in
1988, when Roundup Ready soybean did not yet exist.
Myth No.6: Bt (bacillus thuringiensis) corn threatens the existence
of Monarch butterfly populations. Scientific studies indicate that
there is no overlap between breeding time an population shedding in most
of the corn regions of the US and that corn pollen shedding in most of the
corn regions of the US and that corn pollen does not move far from the
field and quantity of pollen decreases with distance. Studies
further showed that even within corn fields, pollen densities were found
to be low to cause mortality in Monarch larvae.
Myth No.7: GM crops containing viral sequences generate new super
viruses. The RCGM received no evidence suggesting that new virus had
escaped from containment or had infected animals not involved in the
experiment. The UK Royal Society concluded that risks to human
health associated with the use of specific viral DNA sequences in GM
plants are negligible.
Myth No.8: Field trials of GM crops will result in uncontrolled
release of GM organisms, the RCGM considers "field trials as
essential part of risk/benefit analysis prior to any release into the
wider environment. Without field trials it is not possible to assess
safety. The safety of field trials and adequacy of methods to
contain risk, can be adequately assesses and dealt with through risk
management programs." It is also noted that "no one argued
for completely unregulated research. Even the most enthusiastic
supporters of genetic modification were clear on the need for the robust
regulatory framework and risk management. "
RCGM's 1,400-page report - a result of numerous public dialogues - on GM
crops was finally accepted by the New Zealand government after three
months of intense debate decided to lift the ban on field trials for GM
crops but imposed new rules on any new trials and banned the commercial
release of GM products for two years. |