I've read that magnesium deficiency is rare but also that most people don't get enough magnesium. How can these both be true?
They are both true. Surveys of the U.S. population show that most people do not get the recommended daily intake of magnesium from what they eat and drink. This is particularly true of older men and adolescent girls. However, our bodies compensate for this to prevent symptoms of overt magnesium deficiency, such as seizures and abnormal heart rhythms.
Nevertheless, increasing magnesium intake to adequate levels in the diet or with some supplementation has cardiovascular benefits, such as modestly reducing blood pressure and reducing the risk of stroke. It may also help prevent hearing loss from excessive noise, migraine headaches, and menstrual pain, and it can improve insulin sensitivity in people with type 2 diabetes. This is discussed in the Magnesium Supplements Review
, which includes information about recommended intakes, dosage, and ConsumerLab's tests and comparisons of magnesium supplements.
Learn more about magnesium:
How can the Recommended Daily Allowance (RDA) for magnesium be higher than the Upper Tolerable Intake Level (UL)? That is, how can an amount which is healthful also put you at risk for harm? >>
Is it important to take calcium and magnesium together? >>
Is it true that I should not keep magnesium supplements in a daily pill pack mixed with other supplements and medicines? >>
Help! How do I know how much magnesium I am actually getting from my supplement? The label says it contains 500 mg of magnesium "as magnesium citrate" -- but how much of that is magnesium and how much is citrate? >>
Is there an accurate test for magnesium deficiency? >>
Are there drug interactions with magnesium supplements? >>
This CL Answer initially posted on 2/21/2018.