Conversely, consuming too much magnesium typically causes diarrhea as the body attempts to excrete the excess. High magnesium foods include dark leafy greens, nuts, seeds, fish, beans, whole grains, avocados, yogurt, bananas, dried fruit, dark chocolate, and more. The current daily value (DV) for magnesium is 400mg. Below is a list of high magnesium foods, for more, see the extended lists of high magnesium foods by nutrient density, magnesium rich foods, vegetables high in magnesium, and fruits high in magnesium.