"In this large cohort study, we observed that a higher consumption of magnesium was associated with a reduced risk of gallstone disease with a dose-response relationship that was not accounted for by other potential risk factors including other measured dietary variables," wrote lead author Chung-Jyi Tsai from the University of Kentucky Medical Center...After adjusting the results to account for age differences, which may affect the results, Tsai and co-workers calculated that men with the highest levels of magnesium intake (454 mg/d) were 28 per cent less likely to develop gallstones, compared to men with the lowest average intake (262 mg/d).Moreover, dietary magnesium, which include sources like green, leafy vegetables, meats, starches, grains and nuts, and milk, were found to decrease the risk by 32 per cent..."The exact mechanism of magnesium intake in preventing gallstone disease is not clear and can be multi factorial," wrote the authors. "Hyperinsulinemia and insulin resistance are known to be positively associated with gallstone disease.""Low magnesium consumption has been associated with high fasting insulin concentrations. Chronic hypersecretion of insulin, a feature of insulin resistance, may increase the cholesterol saturation index in the bile, and thus may facilitate gallstone formation," they added.