Magnesium status in maternal and cord blood

Magnesium (Mg) was assessed at term in maternal and cord blood in 52 women and 15 age matched non pregnant controls and its correlation was studied with Zn, Cu, Ca and P. Mean Mg levels in maternal and cord blood when compared with controls was not significantly different. A negative correlation was observed between birth weight and Mg levels. The levels were higher (P < 0.05) in the cord blood of new borns weighing less than 3 kgs as compared to those weighing more than 3 kgs. Mg levels were significantly higher in the cord blood of primiparas (P < 0.05) and mothers aged less than 20 years (P < 0.05). A positive correlation was observed between Mg and zinc (P < 0.01). Mg levels did not differ between a male and female child.