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Brisbane Nutritionist’s Guide to Magnesium

What is Magnesium ( Mg)? 

Magnesium is nature’s anti-stress miracle mineral found in the earth, sea, plants, animals, humans.

60% of Magnesium in humans is found in bone with the rest found in muscles, soft tissues and fluids, including blood. Every cell contains and needs Mg to function.

Mg helps convert food into energy, it creates protein from amino acids, repairs DNA, it is part of the contraction and relaxation of muscles, it is a nervous system regulator and it is required for neurotransmitters to send messages to our brains and bodies.

Magnesium – the energy tonic

Mineral Mg plays a role in exercise performance as it helps dispose of lactic acid which causes muscle pain and fatigue.  Mg also fights depression and acts as a protectant against mental illness.  It is a preventative against type 2 diabetes, reduces insulin resistance, improves blood sugar levels and can lower blood pressure.  Mg has a high anti-inflammatory benefit, prevents migraines, improves PMS in mensuration, boosts energy, prevents inflammation, lowers cortisol levels and stabilises hormonal imbalances.

Types of Magnesium

There are a lot of different forms of magnesium, which you may find in supplements! Here are some suggestions:

  • To support bowel motility, alkalising, enhanced absorption – magnesium citrate 
  • To assist in relaxation and sleep – magnesium glycinate
  • Cardiovascular function – magnesium orotate
  • Constipation – magnesium oxide 
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RDI

 

Age

Male

Recommended intake

Female

Recommended intake

Pregnancy (P) + Lactation (L)

0-6m

30mg (AI)

30mg (AI)

 

7-12m

75mg (AI)

75mg (AI)

 

1-3yr

80mg

80mg

 

4-8yr

130mg

130mg

 

9-13yr

240mg

240mg

 

14-18yr

410mg

360mg

400mg (P)

360mg (L)

19-30yr

400mg

310mg

350mg (P)

310mg (L)

31+yr

420mg

320mg

360mg (P)

320mg (L)

Sources of Magnesium (vegetarian)

  • Pumpkin seeds, roasted, 28g = 156mg
  • Chia seeds, 28g = 111mg
  • Almonds, dry roasted, 28g = 80mg
  • Spinach, boiled, ½ cup = 78mg
  • Cashews, dry roasted, 28g = 74mg
  • Peanuts, oil roasted, ¼ cup = 63mg (Peanut butter, 2tbsp = 49mg)
  • Black beans, cooked, ½ cup = 60mg
  • Edamame, shelled, cooked, ½ cup = 50mg
  • Baked potato with skin, 100g = 43mg
  • Banana, 1 medium = 32mg
  • Avocado, ½ cup = 22mg

Sources of Magnesium (animal)

  • Yogurt, plain, low fat, 225g = 42mg
  • Atlantic salmon, farmed, cooked, 85g = 26mg
  • Chicken breast, roasted, 85g = 22mg
  • Beef, ground, 90% lean, 85g = 20mg
For more information or to design a diet high in Mg, please consult our Clinical Nutritionist for a tailored diet plan.