What's the purpose of these warnings? Do they even save lives or just make these bureaucrats feel productive? If they really want to save lives, they need to find the cure to cancer. Do more work there.
It is like treating the symptoms when we could instead just not poison ourselves. We should of course do both, but curing cancer is about as difficult as any medical science task can be. In the meantime we could try letting people know that something might cause unwanted health effects.