I am pretty sure it is vitamins
Because if something happens to the person that is working ..
It shows every ingredient in that food/package. it lists them by weight, so what's most in that food or what weighs the most overall.
Communicable and infectious diseases are those where they can spread from one person to another, from one social group to another. There are many communicable diseases (an example being measles which has made a comeback in the US due to parents not vaccinating their children).
I believe that would be the heart
