The food adulterants and the chemical compound present in the food are harmful for the living organisms. The junk food increases the chances of obesity and health related disease.
The humans knows that the smoking and excess drinking of coca cola can cause harmful effect in their body. But this is human psychology that the knowing about the harmful effect of a particular substance cannot change the drinking or eating behavior of an individual.
It will allow her to see her blood pressure and know right away if she needs to see her doctor, while a nurse hotline cannot perform blood pressure over the phone and she is not qualified to write her own prescriptions
