To make sure you have the right amount of magnesium, you need to include a wide variety of magnesium-rich foods in your diet. Leafy green vegetables, especially spinach, are good sources of this essential mineral. Legumes, such as beans and peas, are also high in magnesium. Nuts, especially Brazil nuts and almonds, and seeds such as hemp, pumpkin and flax, are also excellent sources. Whole grains, including brown rice and quinoa, increase your daily magnesium intake. By including these foods in your diet, you can effectively prevent magnesium deficiency and promote overall health.