These amino acids are very powerful in helping the body eliminate mercury. The pain is usually located right behind the ear. Cadmium is the villain here. Cadmium is a toxic metal that is given off by burning petrochemicals, plastics and tires. Cadmium is used as a stabilizer in PVC pipes and as a pigment in paint.
Farmers also use cadmium laced fertilizers for their crops.
Soil concentrations of cadmium continue to increase. This means that the cadmium content of foods grown in these soils increases, too. You typically feel nothing when you precipitate mercury from your tissues. But removing cadmium from the body can produce flu-like symptoms. This kind of headache is more common to men than women.