Magnesium and PCOS Magnesium is one of the most underappreciated nutrients in PCOS management. Women with PCOS are significantly more likely to have low serum magnesium than women without the condition – and this matters, because magnesium plays a direct, mechanistic role in insulin signalling, glucose metabolism, and the hormonal dysregulation that drives PCOS symptoms. In my clinical practice, measuring magnesium (and often finding it low or at the very bottom of the reference range) is a routine part of working with new PCOS patients. Correcting magnesium deficiency is not a dramatic intervention, but it is a foundational one –…