Partners for good health: Researchers uncover positive link between magnesium and vitamin D
03/04/2019 // Tracey Watson // Views

The health benefits of vitamin D cannot be overstated. Low levels of this crucial hormone have been linked to multiple diseases, including type 2 diabetes, stroke, autism, respiratory illness, depression, Alzheimer’s disease, skin conditions and even cancer.

Achieving and maintaining optimal levels of vitamin D is not always easy, however. The body cannot manufacture its own vitamin D and is reliant on exposure to sunlight and, in some cases, supplementation to maintain adequate supplies.

According to the Vitamin D Council, even eating all the right foods cannot provide the body with enough of this vitamin. And, even with the right amount of sunlight exposure and supplementation, the body’s ability to absorb this nutrient can still be impaired. A study by researchers from Vanderbilt-Ingram Cancer Center, published in the December issue of The American Journal of Clinical Nutrition, found that the mineral magnesium is crucial to the optimization of vitamin D levels.

If your magnesium levels are too low, therefore, you’re probably also low on vitamin D. (Related: Are you getting enough vitamin D? Low levels linked to compromised immune function.)

Magnesium balances vitamin D levels

To provide the best possible benefits to the body, vitamin D levels have to be just right – neither too high nor too low. The Vanderbilt-Ingram researchers set out to determine why some people’s vitamin D levels don’t rise even when they are given high dose supplements, and what magnesium’s role is in the process of balancing these levels.


"Vitamin D insufficiency is something that has been recognized as a potential health problem on a fairly large scale in the U.S.," explained Professor Martha Shrubsole, one of the study’s co-authors. "A lot of people have received recommendations from their health care providers to take vitamin D supplements to increase their levels based upon their blood tests. In addition to vitamin D, however, magnesium deficiency is an under-recognized issue. Up to 80 percent of people do not consume enough magnesium in a day to meet the recommended dietary allowance (RDA) based on those national estimates."

Shrubsole and Qi Dai, M.D., a professor of cancer research and lead author on the study, conducted their research on the link between vitamin D and magnesium as part of a broader study into prevention of colorectal cancer.

Medical Xpress reported:

The randomized study involved 250 people considered at risk for developing colorectal cancer because of either risk factors or having a precancerous polyp removed. Doses of magnesium and placebo were customized based on baseline dietary intake.

As reported by Natural Health 365, the vitamin D levels of those who received both magnesium and vitamin D supplements were optimized. Vitamin D levels were lowered in those whose levels were too high, and increased in those whose levels were too low.

Eighty percent of people are magnesium deficient

This study’s findings are important because experts estimate that 80 percent of Americans are deficient in magnesium. Since the research indicates that low levels of magnesium directly impact the body’s ability to synthesize vitamin D, and vitamin D is so crucial to maintaining good health, the vast majority of us are in serious trouble unless we increase our magnesium levels.

Magnesium doesn’t just help balance the body’s vitamin D levels, however. It is crucial to more than 300 biochemical reactions and processes in the body.

Fortunately, there are many foods that are rich in magnesium, and increasing consumption of these can help prevent low levels of this essential mineral.

These foods include green leafy vegetables, seeds and nuts, organic tempeh, organic tofu, cacao, quinoa, summer squash, raspberries, black beans and seafood.

Discover more at

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