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Effects Of Genetically Modified Food On Human

3584 words - 15 pages

Cavite State University – Main

Indang, Cavite

College of Engineering and Information Technology

Department of Agriculture and Food Technology

AENG 26
Introduction to Environmental Science

Term Paper
Effects of Genetically Modified Food on Human

Amoguis, Jenina R.
ECE 3 – 1

Engr. David L. Cero
Professor
Introduction
Genetically modified (GM) foods are foods derived from organisms whose genetic material (DNA) has been modified in a way that does not occur naturally, e.g. through the introduction of a gene from a different organism. Currently available GM foods stem mostly from plants, but in the future foods derived from GM microorganisms or GM ...view middle of the document...

3. To determine the environmental impacts of GM Foods.
Discussion
What are genetically-modified foods?
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The term GM foods or GMOs (genetically-modified organisms) is most commonly used to refer to crop plants created for human or animal consumption using the latest molecular biology techniques. These plants have been modified in the laboratory to enhance desired traits such as increased resistance to herbicides or improved nutritional content. The enhancement of desired traits has traditionally been undertaken through breeding, but conventional plant breeding methods can be very time consuming and are often not very accurate. Genetic engineering, on the other hand, can create plants with the exact desired trait very rapidly and with great accuracy. For example, plant geneticists can isolate a gene responsible for drought tolerance and insert that gene into a different plant. The new genetically-modified plant will gain drought tolerance as well. Not only can genes be transferred from one plant to another, but genes from non-plant organisms also can be used.

Safety tests on commercial GM crops

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(Source: file:///C:/Users/Cute%20Girl/Desktop/3rd%20yr/environmental/porject%20ni%20nina/nina/12%20bizarre%20examples%20of%20genetic%20engineering%20%20Flavr%20Savr%20tomato%20%20%20MNN%20-%20Mother%20Nature%20Network.htm)

GM tomatoes: The first and only safety evaluation of a GM crop, the FLAVR SAVRTM tomato, was commissioned by Calgene, as required by the FDA. This GM tomato was produced by inserting kanr genes into a tomato by an ‘antisense’ GM method. The test has not been peer-reviewed or published but is on the internet. The results claim there were no significant alterations in total protein, vitamins and mineral contents and in toxic glycoalkaloids. Therefore, the GM and parent tomatoes were deemed to be “substantially equivalent.”
In acute toxicity studies with male/female rats, which were tube-fed homogenized GM tomatoes, toxic effects were claimed to be absent. In addition, it was concluded that mean body and organ weights, weight gains, food consumption and clinical chemistry or blood parameters were not significantly different between GM-fed and control groups. However:

Some rats died within a few weeks after eating GM tomatoes.

• The unacceptably wide range of rat starting weights (±18% to ±23%) invalidated these findings.
• No histology on the intestines was done even though stomach sections showed mild/moderate erosive/necrotic lesions in up to seven out of twenty female rats but none in the controls. However, these were considered to be of no importance, although in humans they could lead to life-endangering haemorrhage, particularly in the elderly who use aspirin to prevent thrombosis.
• Seven out of forty rats on GM tomatoes died within two weeks for unstated reasons.
• These studies were poorly designed and therefore the conclusion that FLAVR SAVRTM tomatoes were safe does not rest...

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