Learn More About Our Major Research Findings

PBB Levels in the Registry 40 years after the contamination incident

60% of Michiganders recently tested have PBB levels that are higher than those of 95% of the general U.S. population 
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PBB Exposure and Thyroid Function

More thyroid problems were found among those exposed to higher levels of PBB, and differences in thyroid hormones were associated with PBB exposure levels in childhood.  
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PBB Effects on Gene Regulation

PBB exposure alters the regulation of genes that control immune function and endocrine function. These modifications have the potential to cause health effects for the children and grandchildren of those exposed. 
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Health Effects of PBB Exposure

PBB exposure has been associated with a variety of health outcomes. The health effects vary depending on biological sex as well as whether an individual was directly exposed or indirectly exposed (exposed from parent). 
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