On what basis should the decisions about whether or not to use genetically engineered foods be made?

There can be many positive side and and negative side of  the genetically modified food.

Explanation:

The basis should be the health of the person consuming food. This is regarding the short and long term health issues of the people.

Whenever any decision is made based on the food that has to be consumed is to be made sure that it does cause any harm to the body not in short period of time.

It is also ensured in the coming years it should also not affect the body of the organism. It should not cause of diseases, disorders to the body.

It should also not affect the other plants growing in the area where these plants are growing.

All and all the genetically modified crops should not cause any ethical, practical or health concern of the people.