4. Perchlorates
Perchlorates are used to produce rocket fuel, fireworks, flares, bleach, fertilizers and explosives. They’re also a common contaminant in drinking water and food (7).
They’re actually so common that it has been determined that traces of it can be found in the bloodstream of virtually every human being on earth (8).
Perchlorates harm your body by preventing iodine from entering the thyroid [9]. This in turn prevents the production of hormones needed for normal growth and development.