Hruby A, et al. - The researchers tested the hypothesis that higher magnesium intake was correlated with lower risk of type 2 diabetes, particularly in the context of a poor-carbohydrate-quality diet characterized by low cereal fiber or high glycemic index (GI) or glycemic load (GL). They found an association between higher magnesium intake and lower risk of type 2 diabetes, particularly in the context of lower-carbohydrate-quality diets.