Hair analysis can detect and measure the content of heavy metals and minerals of the hair. If the hair reveals the presence of heavy metals (arsenic, lead, mercury, aluminum, cadmium, selenium, nickel, copper, and iron), this means the tissues and organs of the body contain them too. Generally heavy metals can not be detected by blood or urine tests. Large amounts of heavy metals consumed can cause death immediately, smaller amounts over many months or years, produce chronic degenerative diseases. In Newsletter #25, Dr. Dodd reveals the various toxic levels of these heavy metals through actual case studies and how she treated these animals back to health with her homeopathic detox nosodes.