Pregnancy Consumption of Fish, Iron, and Folate Supplements and Toxins
A study of 173 participants in Western Australia were studied looking at blood, urine, drinking water, soil, and fish consumption. Increased fish consumption was associated with increased arsenic, while consuming iron/folic acids supplements resulted in decreased concentrations of aluminum and nickel in the urine and lower manganese in the blood.
Many other studies have shown fish to be high in toxins like pesticides and mercury, prompting the advice that fish should generally be avoided in pregnancy. This study would support this, adding arsenic to the list of toxins that can be accumulated in fish. Most prenatal vitamins now have folic acid, and iron deficiency is fairly universal, with this study supporting the addition to iron to the prenatal program.