Myths vs facts: Magnesium and fertility

Magnesium is an essential mineral involved in over 300 enzymatic reactions, including those related to reproduction. Deficiency can impair fertility through oxidative stress, insulin resistance, or menstrual cycle disturbances. However, evidence for a general fertility boost from magnesium supplementation in non-deficient individuals is weak. Many claims on social media or by supplement marketers exaggerate the effect. Studies indicate that adequate magnesium status may support egg quality and sperm motility, but a direct causal link to pregnancy rates is not well established. For those trying to conceive, it is advisable to first measure magnesium status (e.g., via whole blood test) before supplementing. Over-supplementation can cause diarrhea and electrolyte imbalances. Bottom line: magnesium deficiency is a risk factor, not a magic bullet. The foundation should be a balanced diet rich in magnesium from nuts, seeds, and leafy greens.