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Why magnesium is an important mineral to include in your diet
Pregnancy

Why magnesium is an important mineral to include in your diet

2 min readWeek 19
Key takeaways
2 min
  • Consume magnesium-rich foods like spinach, nuts, and whole grains daily to support both maternal and fetal health during pregnancy.
  • Monitor your magnesium intake carefully as pregnancy increases your body's need for this essential mineral by up to 40mg daily.
  • Space out magnesium and zinc supplements to prevent absorption interference and maximize nutritional benefits.
  • Recognize early signs of magnesium deficiency including leg cramps, migraines, and high blood pressure to prevent complications.
  • Choose food sources over high-dose supplements to avoid digestive side effects like diarrhea and nausea.

Magnesium is essential for healthy pregnancy as it prevents complications like preeclampsia, gestational diabetes, and leg cramps. Pregnant women need 350-400mg daily from sources like spinach, nuts, and whole grains to support both maternal and fetal development.

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Why magnesium is an important mineral to include in your diet

Magnesium is one of the most important minerals for a future mother and child. It is necessary for the synthesis of nucleic acids and proteins and for the transmission of impulses in nerve and muscle fibers. Many pregnancy complications are associated with magnesium deficiency, such as high blood pressure, gestational diabetes, leg cramps [1] and migraines [2]. The lack of this important mineral is considered one of the probable causes of preeclampsia and miscarriage [3].

If you adhere to a healthy diet, then it is almost impossible to have a magnesium deficiency: Magnesium is contained in almost everything, from green vegetables and legumes to cereals and nuts. However, there are several reasons why you need to pay attention to whether you’re getting enough magnesium during pregnancy:

  • During pregnancy, the need for this mineral increases because it is needed by the mother and the baby.

  • When you’re pregnant, a lot of magnesium is excreted in the urine, so you need to maintain a healthy level of magnesium.

  • Zinc — another important trace element for pregnant women — interferes with the absorption of magnesium [4], so even if you think you’re consuming enough minerals, you may be deficient. Therefore, if you take supplements of magnesium and zinc, then they should be taken over time so that your system can absorb them properly.

It is best to get magnesium from food, if only because high doses of dietary supplements or drugs often lead to diarrhea, which may be accompanied by nausea and intestinal cramps [2]. And food cannot cause an overdose. Here’s a list of magnesium-rich foods:

  • nuts: cashews, almonds, hazelnuts, peanuts;

  • spinach;

  • cereals: bulgur, oats, buckwheat;

  • soy milk;

  • beans;

  • brown rice;

  • bananas;

  • fish: salmon and halibut.


Frequently asked questions

Pregnant women need approximately 350-400mg of magnesium daily, which is about 40mg more than non-pregnant women. This increased requirement supports both maternal health and fetal development throughout pregnancy.

The best sources include leafy greens like spinach, nuts such as cashews and almonds, whole grains like oats and bulgur, and legumes. These foods provide natural magnesium without the risk of overdose.

Yes, magnesium deficiency is linked to serious complications including preeclampsia, gestational diabetes, high blood pressure, and increased miscarriage risk. Adequate intake helps prevent these potentially dangerous conditions.

Magnesium supplements can be safe when taken as directed, but food sources are preferred. High doses may cause digestive issues, so consult your healthcare provider before starting any supplementation during pregnancy.

Common signs include frequent leg cramps, migraines, muscle twitches, fatigue, and elevated blood pressure. If you experience these symptoms, discuss magnesium testing with your healthcare provider.

Medical Disclaimer

This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or qualified health provider with any questions you may have regarding a medical condition.

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Medically reviewed content

Reviewed by healthcare professionals · Updated August 15, 2025

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