Magnesium and potassium provide several health benefits and interact to support bone and muscle health. People can obtain magnesium from green leafy vegetables, nuts, whole grains, and milk. Potassium sources include bananas, avocados, oranges, and milk. Magnesium and potassium deficiencies can cause issues like muscle weakness, high blood pressure, and bone loss. Consuming enough of both nutrients may help prevent arthritis progression and increase bone density.