This news is based on the following article: Foster WG, Evans JA, Little J, et al. Human exposure to environmental contaminants and congenital anomalies: a critical review. Crit Rev Toxicol 2017; 47: 59-84. doi: 10.1080/10408444.2016.1211090
This review of epidemiological studies on the relation between exposure to chemical contaminants and the risk of congenital anomalies in descendants shows that strong associations are often reported for occupational exposures, but results vary widely for the general population. Overall, the literature has severe methodological flaws that prevent the drawing of any firm conclusions.