What is a noted effect of using magnesium in the perinatal period?

Using magnesium during the perinatal period has been observed to notably reduce the symptoms of restless leg syndrome. This condition can be particularly bothersome during pregnancy, as hormonal changes and increased blood volume can contribute to muscle discomfort and restless sensations in the legs. Magnesium is known for its muscle relaxant properties and plays a vital role in neuromuscular function, which can help alleviate these symptoms.

The other options do not align as closely with the well-documented effects of magnesium during this period. While some individuals may experience improvements in mood stability with magnesium supplementation, the most direct and often-discussed effect relates specifically to its impact on restless leg syndrome, making it the most accurate choice in this context.