Spinach is a well-known source of magnesium, a mineral used in muscle contraction, nerve signaling, bone strength, energy conversion and sleep support, according to the National Institutes of Health. But spinach is not the only food that supplies the mineral, and several foods contain more magnesium per serving or by weight, according to data from the U.S.Department of Agriculture and nutrition reports.
Health authorities state that adults need 310 to 420 milligrams of magnesium per day, depending on age and sex, and that a significant portion of the population falls short of that intake [1].
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