POSITIVE AND NEGATIVE EFFECTS

CAUSED BY GENETIC MODIFIED FOOD

By Nengguang LIU

DEFINITION OF GENETIC MODIFIED (GM) FOODS

The term Genetically-modified (GM) foods is most commonly used to describe crop foods and animal products which are modified by molecular biology techniques.

TABLE OF CONTENT HUMAN HEALTH• Advantages• disadvantages ENVERIOMENT• Advantages• Disadvantages YEILD OF FOOD• Advantages• DisadvantagesSUMMARY

HUMAN HELATHThe debate surrounding the human health of using

GM foods is growing increasingly complex, intense

and emotional.

ADVANTAGES VS. DISADVANTAGESAD: provide more nutrition than unmodified foods

Such as the mineral, vitamin.

DisAD: Possible to cause an unexpected allergen

or allergic reaction in susceptible individuals

because of the foreign gene which was

introduced by GM project.

ENVERIOMENT The environmental implications of producing GM

products

become a subject of much debate.

ADVANTAGES VS. DISADVANTAGESAD: Reduce agricultural wastes • Reduce the chemical pesticides• Reduce the herbicides

ADVANTAGES VS. DISADVANTAGESDisAD: • GM foods lead unintended harm to other

organisms(eg. kill various of insect larvae indiscriminately),

• GM foods result the non-target effects to the environment (eg. weeds would then be herbicide tolerant as well).

INCREASING FOOD YIELD Can VS. Can not

Against

High Food Yield

Low Food Yield

SUMMARY It can be seen that GM foods do have the potential to

solve many of the world's hunger and malnutrition problems, and to help protect and preserve the environment by increasing yield and reducing reliance upon chemical pesticides and herbicides.