Your body could be trying to tell you something. So, the next time all you can think about is a juicy steak, Dairy Milk or even ice, pay attention to what your body is trying to tell you and try one of our clever food swaps. “Drinking too much alcohol, tea, coffee and fizzy drinks can also deplete levels of magnesium,” says Nicola Lowe, professor of nutritional sciences at the University of Central Lancashire.