Related by context. Frequent words. (Click for all words.) 78 carcinogens 77 carcinogenic 59 dioxins 59 benzene 58 toxic chemicals 58 hexavalent chromium 58 contaminant 58 toxins 58 harmful chemicals 57 phthalates 57 PFOA 57 neurotoxin 57 formaldehyde 57 toxin 56 PBDEs 56 arsenic 55 acrylamide 55 toxic substances 54 phthalate 53 bisphenol 53 chromium 53 dioxin 53 secondhand smoke 53 pollutant 52 PAHs 52 chemicals 52 Cadmium 52 toxicity 51 Formaldehyde 51 contaminants 51 Benzene 51 harmful substances 50 birth defects 50 methylmercury 50 flame retardants 50 groundwater contamination 50 triclosan 49 perchlorate 49 hydrogen sulfide 49 asbestos fibers 49 toxic 49 Bisphenol 49 diacetyl 48 trace amounts 48 contamination 48 cigarette smoke 48 cadmium 48 hazardous chemicals 48 additives 47 diesel exhaust 47 PCBs 47 harmful 47 pesticide residues 46 additive 46 C8 46 pollutants 46 radon 46 barium 46 mercury contamination 46 chemical 46 respiratory illnesses 45 ionizing radiation 45 hazardous substances 45 mercury 45 polychlorinated biphenyls 45 contaminated 45 toxics 45 VOCs 45 cancers 45 potentially harmful 45 BPA 45 carbon monoxide 45 passive smoking 45 aspartame 44 PAH 44 particulates 44 aflatoxin 44 particle pollution 44 particulate matter 44 preservative 44 chemical compounds 44 volatile organic compounds 44 pesticides 43 fluoride 43 Carbon monoxide 43 ozone pollution 43 ultraviolet radiation 43 TCE 43 Superfund site 43 asbestos 43 selenium 43 Arsenic 43 concentrations 43 tanning beds 43 solvents 43 ppb 43 iodine 43 radioactive iodine 42 nitrates 42 allergic reactions 42 allergen