A simple action by all enviralists would be to never take a single prescription drug, over the counter drug or a vitamin again. They should never get any type of vaccination. They should never drink chlorinated water, pasturized milk nor eat cheese. They should never eat any animal, bird or fish that has been treated with vitamins or drugs.
They should only go to Druid Shamans for hocus pocus medicine. They should only eat the bark off the south side of a tree.
In about 20 years Darwin will have weeded out most of them.