Magnesium dietary intake

Patients should receive supplemental calcium and vitamin D if dietary intake is inadequate. Take calcium supplements and calcium- aluminum- and magnesium-containing agents at a different time of the day to prevent interference with risedronate absorption. 

Longnecker, M.P., Kamel, F., Umbach, D.M., Munsal, T.L., Shefuer, J.M., Lansdell, L.W., and Sandler, D.P. 2000. Dietary intake of calcium, magnesium and antioxidants in relation to risk of amyotrophic lateral sclerosis. Neuroepidemiology 19, 210-216. 

Some antacid mixtures contain sodium, which may not be readily apparent from the name of the preparation. Thus they may be dangerous for patients with cardiac or renal disease. For example, a 10 ml dose of magnesium carbonate mixture or of magnesium trisilicate mixture contains about 6 mmol of sodium (normal daily dietary intake is approx. 120 mmol of sodium). 

Magnesium supplements may reduce hypertension in some persons. The issue of magnesium and the control of blood pressure has been difficult to establish conclusively. One study involving people with moderate hypertension revealed that daily doses of 20 mmol (485 mg) Mg could produce a decline in blood pressure, where at least three continuous months of supplementation were required for the effect (Witteman ( f a ., 1994). The 20-mmol supplement contained about double the usual dietary intake from food. Magnesium sulfate is commonly used as a drug... 

Urinary potassium and magnesium losses are anticipated consequences of AmB therapy. Some of the losses can be compensated for with increased dietary intake, while others will require oral or intravenous replacement. It should be recognized that the serum levels of these ions do not necessarily correlate with the total deficit, as the plasma levels tend to be conserved while cellular stores are becoming depleted. In general, potassium and magnesium supplements should be given to all patients and the amounts increased if the... 

Magnesium deficiency is relatively common in the United States. In many cases, it exists because of inadequate dietary intake. In other cases, it occurs as a side effect of some relatively common diseases, and a significant number of prescription medications tend to block its assimilation. 

The topical effect of hard water on the skin is a more likely explanation than ingestion of increased amounts of calcium or magnesium, since drinking water contributes only a small part of the total dietary intake of these cations [341 (III)]. 

Other electrolytes that require monitoring include magnesium and phosphorus. Both are eliminated by the kidneys and are not removed efficiently by dialysis. Typically their dietary intake is re-... 

Magnesium deficiency results from a combination of poor dietary intake and increased urinary or intestinal losses. 

Copper is recognized as an essential metalloelement like sodium, potassium, magnesium, calcium, iron, zinc, chromium, vanadium and manganese [1]. Like essential amino acids, essential fatty acids and essential cofactors (vitamins), essential metalloelements are required for normal metabolic processes but cannot be synthesized de novo and daily dietary intake and absorption are required. The adult body contains between 1.4 mg (22 pmol) and... 

Low serum potassium, below 3.4 mEq/L (3.4 mmol/L), may be caused by the use of diuretic medications that result in the excretion of potassium in the urine and by the loss of potassium through diarrhea or excessive sweating. Deficient dietary intake of potassium and magnesium (which causes potassium to move into the cells) could contribute to the development of hypokalemia. 

Decreased dietary intake of calcium Decreased levels of vitamin D Magnesium deficiency Elevated phosphorus Acute inflammation of the pancreas Chronic renal failure... 

The primary treatment for hypomagnesemia is oral supplementation and increased dietary intake of foods containing magnesium. Table 8-1 lists suggested dietary interventions. 

The recommended dietary intake of magnesium is 400 mg per day for men and 315 mg per day for women. This is equivalent to just 4 oz of bran cereal. Because magnesium levels are easily maintained by a normal diet, it is unusual for anyone to have a magnesium deficiency. Most magnesium deficiencies are the result of factors that decrease magnesium absorption. People with gastrointestinal disorders, alcohol abusers, and the critically ill are most likely to have these types of absorption problems. 

The recommended daily dietary intake of magnesium is 50-70 mg for children under 1 year, 150-200 mg for children under 6 years, 350 mg for adult men and 300 mg for adult women. During pregnancy and lactation, the daily dose of magnesium should be increased to 450 mg. The recommended daily intake is 400-500 mg of calcium for children under 1 year, 800-1200 mg for older children and adolescents, 800 mg for adults and 1200 mg for pregnant and lactating women. 

Standing Committee of the Scientific Evaluation of Dietary Reference Intakes, Food and Nutrition Board, and Institute of Medicine (1997). In "Dietary Reference Intakes for Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride." National Academy Press, Washington, DC. 

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