I agree with the answer above and would like to add on to it. When looking at nutrition labels you should be looking at what ingredients was used to make the food, including the chemical compositions. For an example, some people are allergic to peanut butter, therefore it is their responsibility to check the label so that they know what company made it and the ingredients. Also remember to check the expiring date :D
Attempted murder?
It's probably abuse.
The answer to your questions : secreted substance by the cell
that originally produced and secreted it. The process of reuptake, for
example, affects serotonin.
Cause some of the people in the world hide behind it to show that they are something
hmmm it really matters on a question