Whole Grains
Another excellent magnesium source is whole grains like wheat, oats, barley, buckwheat, and quinoa. For example, a 1-cup serving of cooked buckwheat gives you 86 mg of magnesium (20% of the DV). They also contain B vitamins, selenium, manganese, and fiber. Whole grains have anti-inflammatory properties and mitigate risk factors associated with heart disease.