Hypomagnesemia is having a serum magnesium concentration of <1.3 mEq/L.
Patients with mild hypomagnesemia is asymptomatic and have usually a serum Mg >0.5 mmol/L. While those with moderate-severe hypomagnesemia, the patient is symptomatic and have serum Mg <5 mmol/L.
Hypermagnesemia signs and symptoms usually do not appear unless Mg >2 mmol/L (5 mg/dL). It rarely occurs and usually iatrogenic.
In addition to the known evils of maternal smoking during pregnancy on the son’s semen quality, prenatal exposure to paternal smoking can also be harmful, according to data from a large Danish National Birth Cohort (DNBC) presented at the ESHRE 2019 Meeting.