Wearing gloves can keep food safe by:

Reducing the spread of diseases.

Explanation:

Wearing of gloves in the preparation and serving of foods helps to control the bacteria on our hands from spreading and thus helps in controlling or reducing the spread of diseases. Although there has been some critics that says that washing of person's hand during cooking is enough and there is no need to wear gloves after that, but in the real sense of it disease outbreak due to food contamination is because of those that handles food, wearing gloves after washing of hands will further prevent contaminations. Also, the use of gloves is recommended by the United States of America Food and Drug Administration.