Exposure to lead has an effect on fertility rates finds a study. The research by researchers at Carnegie Mellon University examined the impact of exposure to lead (in the air and topsoil) on fertility in the United States and found that exposure matters for both women and men. Until now we have lacked causal evidence of the effects of lead exposure explained Karen Clay who led the study. While many people have been focused on lead in water because of Flint or lead in paint because of public service campaigns lead in the air and in the soil also deserves significant