This is only in the case whereby protein introduced possesses allergenic properties and is introduced to the edible part of the particular plant. Due to the difficulty of predicting allergens, there should be careful selection in gene donors so as to avoid widespread consequences.
Bacteria in the digestive tracts can pick up antibiotic resistant genes present in genetically modified foods and it may bring about an increase in the problem of bacteria adapting to antibiotics. It is believed that the dispersal of pollen and seeds from genetically modified crops to other crops and the surrounding environment might result in genetic and biological pollution bringing about a new breed of genetically engineered organisms which will lead to unknown problems. This pollution will eventually spread to the soil and eventually make every plant genetically modified.
Genetically modified foods are seen as a means of solving the problem of food security and hunger in the world. Lack of food is only part of the reason why there is food shortage. There are other contributing factors, such as the availability of farming land and land tenure systems, wars etc., which should be taken into account.
The long-term effects of consumption of genetically modified foods should be studied into full before being marketed.
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