Essay- should goverment put warning label on food.?

i said yes.) here is my body paregraph and comments from my teacher.. i need help.)))

Warning lebels improve health of american citizen. When Corporations put warning on labels on their products it helps to improve the health of the average American citizen, which has been slowly decaying away in the past decades. Example, There is no justified reason for corporations to not put up these warning labels as it shows they may have something to hide. Lately, there are many bad chemicals have been added to all sorts of foods that are available to anyone in super markets. The least they could do is warn the public about what they're about to put into their bodies. Moreover, Warning labels on foods would be a good thing, just like they benefit any situation. People don't seem to complain about warning labels on electrical equipment because the labels are there for the consumer's own safety. Warning labels should be available on all foods so that consumers can get an accurate description of what they are buying and how it will affect their health, whether positively or negatively.
( she said its not well devloped body paregraph.)) i need help..))