“…of magnesium, and your heart has that same magnesium-retaining, stabilizing effect when your thyroid is good. But if you're suddenly increasing the thyroid when you've been deficient, your muscles, your leg muscles will compete with your heart muscles for that trace of magnesium in your diet, and your heart arteries will constrict and you'll get a heart pain. So it's very important to make sure that your diet includes plenty of magnesium when you're starting to use thyroid. Just magnesium-rich foods? Yeah, for example, milk has a good amount of magnesium, and milk and meat will provide”