Genetically Modified Foods - part 1

Genetically Modified Foods - Genes

For centuries agriculture and horticulture have cross-bred plants in order to improve the end product. Improvements in hardiness (resistance to pests and disease), taste, size and yield have all been achieved. This system though, has always carried the safeguard of nature’s own system which prevents organisms of different species from breeding with each other.

When scientists discovered DNA, and the way to extract the genes within it, it was not long before the idea of transferring a gene from one organism into another was born. As the genes in an organism contain the ‘instructions’ for how it grows and develops, the natural process is subverted within the receiving organism.

The justifiable fear that many have is of the unknown effects GM may have on the organism, and in the context of crops, on genetically modified foods. The biotechnology companies tell us that they have found no negative effects.

Independent scientists however, have suggested that disruption to the natural organic order is not only possible but has already taken place.

One example of such disruption can be seen in the attempt made by scientists at the Max Planck Institute in Germany in 1997, to reduce the sugar content and increase the starch present in the potato.

The result was a disruption in the metabolism of the potato and the loss of both sugar and starch. Tests also revealed components in the potato that were not there before. This was not the only occurrence of negative reactions to gene manipulation in potatoes. Click here for more details.

Although GM crops are not yet officially approved for planting in the UK (there are hundreds of trial areas in the UK), GM foods have found their way into the stomachs of UK citizens...

…The Soil Association has published the findings of its investigation into the use of GM animal feed. We have been shocked to find that very large quantities of GM feed are being used in the UK to produce our food. Around 60% of the maize and 30% of the soya is GM in the feed used by dairy and pig farmers. This means that most of the non-organic milk, dairy products and pork being sold in the UK is from GM-fed animals. For the full story click here

Genetic modification and the engineering involved in the extraction and transfer of genes, is a young, haphazard and unpredictable business. A single organism can contain many thousands of different genes, each doing its own job. Scientists are nowhere near identifying the exact roles of the genes they are manipulating.

It would be natural to assume then, that sufficient measures would be in place to test genetically modified foods for safety. Human and animal, let alone plant health is at stake after all. In fact the only test in place is based on ‘substantial equivalence’.

In Part 2 – Genetically modified foods - substantial equivalence you'll discover the means by which Genetically modified foods are passed fit for consumption.


Return from genetically modified foods - Genes to GM Introduction