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Bioengineered foods are also suspected to have the potential of causing allergies and mutating some inner-body bacterium into drug-resistant ones.
GMOs also usually have strong fertility growth and can easily cross-breed with traditional species and contaminate "pure" genes. The massive production and reproduction of GMOs could also break the ecological balance.
So far there is no sufficient proof to second these worries, but neither is there evidence to deny them completely.
Before a final conclusion on GMO safety is reached, it is important and reasonable to keep effective administration of the production and sale of GMOs.
Many countries have rules that the production of bioengineered foods must have the approval of agricultural departments and go through certain safety assessment procedures.
Labelling GMO products is also a minimum precaution. If GMO producers are not obligated to do so, consumers will unknowingly become their test subjects.
Many regions such as Japan, Russia, South Korea and the European Union require GMO producers to remind consumers of the special nature of their products with conspicuous marks on packages.
More than 160 countries and regions, including China, have signed the 2000 Cartagena Protocol on Biosafety, which has a labelling requirement for GMOs.
In China, GMOs have reached the daily lives of families. More than half of the bean oil in China contains genetically modified ingredients. China imports large amounts of bioengineered foods every year although it does not grow GMOs massively.
China’s science and agriculture departments have created a series of rules concerning the regulation and reporting of GMOs to protect the safety of domestic consumers and guarantee their right to information.
However, strict biosafety measures often ignite trade frictions and therefore invite protests from GMO-producing countries.
In fact, some economic considerations are involved in the GMO labelling rules of some countries because cheap GMO imports have flooded their local food industry.
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