Six easy ways women can boost levels of magnesium and slash their risk of a heart attack, cure insomnia and boost their mood as survey reveals 11 per cent are lacking this vital nutrient. Fluctuating oestrogen in mid-life raises the risk of heart attacks and fractures Magnesium also helps to ease insomnia, as well as giving moods a boost.  Women on diets to counter menopausal weight gain may be missing out. Up levels by swapping rice for quinoa, and snacking on nuts and seeds. Adding spinach to smoothies also contributes to the recommended daily intake.   By Rob Hobson For Mailonline and Alexandra Thompson Health Reporter For Mailonline