Do Pregnant Women Need Magnesium Supplements?

Do Pregnant Women Need Magnesium Supplements?
Illustration of taking supplements. Credit: Freepik

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During pregnancy, it’s essential for mothers to get adequate vitamins and minerals to support the growth and development of the fetus, and magnesium is one of those important nutrients. Magnesium can help alleviate some common pregnancy discomforts such as leg cramps, sleep disturbances, and constipation. But, do pregnant women need to take magnesium supplements?

 

Benefits of Magnesium for Pregnant Women

Magnesium plays a vital role during pregnancy, benefiting both the developing fetus and the mother’s overall health. This mineral aids nerve and muscle function and helps maintain normal blood pressure levels. Additionally, magnesium supports the development of the baby’s teeth and bones and helps prevent premature labor and other pregnancy complications.

Here are some key benefits of magnesium during pregnancy:

  • Prevents High Blood Pressure
    Magnesium helps keep blood pressure stable. High blood pressure during pregnancy could be a sign of preeclampsia, a serious condition marked by high blood pressure and protein in the urine.

  • Relieves Leg Cramps
    Studies suggest that taking 200 mg of magnesium daily can help reduce leg cramps, which are often caused by fluid retention and weight gain during pregnancy.

  • Reduces the Risk of Cerebral Palsy
    Magnesium sulfate has been shown to reduce the likelihood of babies being born with cerebral palsy in mothers at risk of preterm labor.

  • Improves Sleep Quality
    Many pregnant women, especially in their third trimester, experience sleep disturbances. Magnesium can help improve sleep quality and reduce daytime fatigue.

  • Boosts Mood
    Magnesium intake during pregnancy may help alleviate symptoms of depression, promoting better mental well-being.

  • Supports Baby's Health
    Babies born to mothers who get enough magnesium during pregnancy have a lower risk of being admitted to the ICU after birth.

 

Do Pregnant Women Need Magnesium Supplements?

The need for magnesium increases during pregnancy compared to normal levels, and this requirement varies depending on the mother's age. Here’s a breakdown of recommended daily magnesium intake for pregnant women:

  • Pregnant women aged 18 years and under: 400 mg per day.

  • Pregnant women aged 19–30 years: 350 mg per day.

  • Pregnant women aged 31–50 years: 360 mg per day.

After giving birth, breastfeeding mothers need around 310–360 mg of magnesium daily. Magnesium during breastfeeding is important for supporting milk production, helping with stress-related milk flow issues, and boosting the mother’s immune system.

Experts suggest that magnesium supplements during pregnancy are generally safe and can help ensure adequate intake. However, if the mother’s diet is well-balanced and nutrient-rich, supplements are usually unnecessary.

Pregnant women can easily meet their magnesium needs through a balanced diet. Here are some magnesium-rich foods:

  • Green vegetables like spinach and kale.

  • Nuts and seeds, such as almonds, chia seeds, flaxseeds, and edamame beans.

  • Fruits like bananas and avocados.

  • Potatoes.

  • Tofu.

 

Magnesium deficiency during pregnancy is rare, but if you have concerns about your magnesium intake, it’s a good idea to consult your doctor. Your doctor can recommend magnesium supplements tailored to your needs.

If you have any questions about pregnancy or magnesium requirements, you can use the consultation feature on the Ai Care app, available for download from the App Store or Play Store.

 

Looking for information about nutrition, food and other diet tips? Click here!

 

Writer : Ratih AI Care
Editor :
  • dr Hanifa Rahma
Last Updated : Friday, 30 May 2025 | 15:33

Dasher, E. Magnesium during Pregnancy. Available from: https://www.babycenter.com/pregnancy/diet-and-fitness/magnesium-in-your-pregnancy-diet_659

Miller, K. (2025). Can You Take Magnesium While Pregnant?. Available from: https://www.thebump.com/a/magnesium-during-pregnancy

Ogbonna, E. (2025). Is Magnesium Safe To Take if You're Pregnant?. Available from: https://www.health.com/can-i-take-magnesium-while-pregnant-11706528