Take action:
The current recommended RDA for magnesium is 400mg. This you can get by means of the food you eat: include at least five servings of fruits and vegetables in your diet every day, choosing dark-green leafy vegetables often. Protein-rich foods such as chicken, fish and meat aid the absorption of magnesium, along with the intake of calcium, phosphorus and zinc, and the vitamins B1, B6, C and D.
Note that you may be at increased risk of magnesium deficiency if you abuse alcohol or suffer from diabetes, severe diarrhoea or vomiting. Speak to your doctor about supplementing your diet.