Magnesium plays an important role in carbohydrate metabolism and its deficiency may worsen insulin resistance, a condition that often precedes diabetes, or may be a consequence of insulin resistance.People being treated on an intensive care unit (ICU) who have a low magnesium level may have a higher risk of requiring mechanical ventilation, and death. Causes
Magnesium deficiency may result from gastrointestinal or kidney causes. Gastrointestinal causes include low dietary intake of magnesium, reduced gastrointestinal absorption or increased gastrointestinal loss due to rapid gastrointestinal transits. Kidney causes involve increased excretion of magnesium. Poor dietary intake of magnesium has become an increasingly important factor – many people consume diets high in refined foods such as white bread and polished rice which have been stripped of magnesium-rich plant fiber.Magnesium deficiency is not uncommon in hospitalized patients. Up to 12% of all people admitted to hospital, and as high as 60–65% of people in an intensive care unit, have hypomagnesemia.About 57% of the US population does not meet the US RDA for dietary intake of magnesium. The kidneys are very efficient at maintaining body levels; however, if the diet is deficient, or certain medications such as diuretics or proton pump inhibitors are used, or in chronic alcoholism, levels may drop. Low levels of magnesium in blood may be due to not enough magnesium in the diet, the intestines not absorbing enough magnesium, or the kidneys excreting too much magnesium. Deficiencies may be due to the following conditions:

Medications
Loop and thiazide diuretic use (the most common cause of hypomagnesemia)
Antibiotics (i.e.
Caput succedaneum is a neonatal condition involving a serosanguinous, subcutaneous, extraperiosteal fluid collection with poorly defined margins caused by the pressure of the presenting part of the scalp against the dilating cervix (tourniquet effect of the cervix) during delivery.It involves bleeding below the scalp and above the periosteum. See also
Cephalohematoma
Cephalic
Chignon (medical term)
Hematoma
Subgaleal hemorrhage

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