Headaches, exhaustion, feeling sluggish all day then struggling to sleep at night are problems many middle-aged women will recognise.
All too often we dismiss them as nothing more than the symptoms of busy modern life and getting older.
But they could have a surprising cause in many people, say experts: A lack of magnesium.
One of six essential minerals we need in our diet, magnesium is stored mainly in our bones and muscles. Each person’s body will contain around 25g, and it is used in a startling number of ways.