The paper presents the results of an investigation of the blood levels of mercury, lead, and cadmium in women of indigenous ethnic groups in the Far North. A certain correlation was found between the higher incidence of some poor pregnancy outcomes and fetal maldevelopment upon increased maternal exposure to heavy metals. The found correlations were statistically insignificant. There was no significant association of female exposure to heavy metals with menstrual irregularities and the sex ratio of neonates.