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Published on January 28, 2019

In this three-part series on magnesium, we previously discussed what magnesium is and how it works in the body (part 1) and today we will take a look at why magnesium is important for health (part 2). Don’t miss part 3 where we will discuss how magnesium status is assessed.

Atrial Fibrillation and Other Cardiovascular Diseases

Magnesium is needed to regulate blood pressure and maintain a steady heartbeat. Having a low magnesium level is a risk factor for atrial fibrillation, which is an irregular, usually rapid heart rate that often causes poor blood flow and increased risk of stroke and heart failure. The Framingham Heart Study found that among 3,530 community-dwelling participants followed for up to 20 years, those with serum magnesium levels less than 1.8 mg/dL were approximately 50% more likely to develop atrial fibrillation compared to those with levels at 2.0 mg/dL or higher. A 2007 meta-analysis investigating the use of intravenous magnesium in treating acute atrial fibrillation demonstrated that magnesium was more effective in achieving rate and rhythm control compared to control groups (either placebo or antiarrhythmic agents). Also, more patients given magnesium responded to treatment compared to control groups (86% vs. 56%) and response time was shorter (~7 hour difference). Additionally, low magnesium has been associated with a higher risk of hypertension, cardiovascular disease, stroke, and sudden cardiac death.

Vitamin D Status

In a previous blog we discussed how magnesium is a key co-nutrient for vitamin D metabolism. Without sufficient magnesium, the amount of vitamin D that can be metabolized and used by your body is limited. Using your data from the D*action questionnaire, we showed that 56% more supplemental vitamin D is needed to achieve 40 ng/ml for those not taking magnesium compared to those who are.

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Type 2 diabetes

Magnesium plays a key role in blood glucose control and studies have linked low magnesium levels with insulin resistance. Higher magnesium intake has been associated with a lower risk of type 2 diabetes. For example, a 2016 meta-analysis assessing magnesium intake found that for every 100 mg/day increase in magnesium there was a 19% reduction in type 2 diabetes risk. Additionally, a 2017 meta-analysis assessing magnesium levels found a 36% reduction in the risk of type 2 diabetes when comparing the highest to lowest levels.

Depression

Studies have found an association between low magnesium intake and depression. Magnesium supplementation has been shown to provide clinically significant improvement within 2 weeks among adults experiencing mild to moderate depression. A trial comparing magnesium to an anti-depressant found comparable improvement in depression symptoms between the two treatments.

Bone Health

In a previous blog, we discussed how magnesium and vitamin D work together to maintain strong and healthy bones. Vitamin D helps regulate bone metabolism which involves replacing old bone with new bone. When magnesium levels are low, osteoblasts (cells that form bone) are inhibited and osteoclasts (cells that break down bone) are promoted, resulting in an increase in bone resorption (a process in which calcium is moved from bone tissue into the blood). Studies have found that magnesium can improve bone mineral density and those with lower magnesium levels have a higher risk of osteoporosis.

Migraines

Low magnesium (and vitamin D) levels have been associated with migraines. Studies have shown that magnesium can help relieve migraine symptoms and reduce their frequency. A 2016 meta-analysis of 21 studies found that intravenous magnesium significantly alleviated acute migraine symptoms by about 75% both immediately (15-45 minutes) and longer term (24 hours). Oral magnesium, used for migraine prevention, was found to significantly reduce the frequency of migraines by 80% and the intensity of migraines by 78%.

How do I know if it’s working for me?

To help you track your supplement use and nutrient levels, GrassrootsHealth has created an online tracking system called myData-myAnswers. For each specific supplement, you can track what days you take it, what time of the day, if it was with a meal, and many other details. You can also track many pre-set health conditions or add your own custom trackers. This will help you know your true supplemental intake for magnesium and other nutrients and how these nutrients impact your health. Check it out today!

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How Can You Use this Information for YOUR Health?

Having and maintaining healthy vitamin D and other nutrient levels can help improve your health now and for your future. Measuring is the only way to make sure you are getting enough!

STEP 1 Order your at-home blood spot test kit to measure vitamin D and other nutrients of concern to you, such as omega-3s, magnesium, essential and toxic elements (zinc, copper, selenium, lead, cadmium, mercury); include hsCRP as a marker of inflammation or HbA1c for blood sugar health

STEP 2 Answer the online questionnaire as part of the GrassrootsHealth study

STEP 3 Using our educational materials and tools (such as our dose calculators), assess your results to determine if you are in your desired target range or if actions should be taken to get there

STEP 4 After 3-6 months of implementing your changes, re-test to see if you have achieved your target level(s)

Enroll in D*action and Build Your Custom Test Kit!

BLACK FRIDAY SALE! 20% off all orders! Use code: BF24. Sale ends Monday 12/2/24 at 11:59 PM PST. Offer does not apply to the T1D Prevention Test Kit.

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