Pregnant women who do not consume enough calcium may be at risk for more than thinning bones, Reuters reported this week. According to recent findings, pregnant women who did not get enough calcium had higher levels of lead in their blood compared with women who did have adequate calcium intake. However, overall levels of lead in the blood remained low--less than 5 micrograms (mcg) per decilitre (dL) of blood. Levels above 10 mcg/dL are considered cause for concern. These findings are based on research carried out at the University of North Carolina in the U.S. Scientists studied interviews and blood samples from 195 pregnant women. Full details of the research are published in the November issue of the American Journal of Epidemiology.