I am waiting for the moment where those people realize that a lot of food contains salicylates, acetylsalicylic acid (Aspirin) among them. Just by habit of nature.
I lived with a person that had an intolerance (sometimes called "asprine intolerance") and it is basically impossible to keep your diet free from that.[1]
I don't understand the question. I am allergic to penicillin. I just tell the doctor when they are perscribing antibiotics. I can still take medication.
Some substances, due to their large adverse reactions in some, can and are restricted.
I lived with a person that had an intolerance (sometimes called "asprine intolerance") and it is basically impossible to keep your diet free from that.[1]
[1]: http://en.wikipedia.org/wiki/Salicylate_intolerance#Treatmen...