Magnesium

Overdose from dietary sources alone is unlikely because excess magnesium in the blood is promptly filtered by the kidneys,[68] and overdose is more likely in the presence of impaired renal function. In spite of this, megadose therapy has caused death in a young child,[77] and severe hypermagnesemia in a woman[78] and a young girl[79] who had healthy kidneys.
The most common symptoms of overdose are nausea, vomiting, and diarrhea; other symptoms include hypotension, confusion, slowed heart and respiratory rates, deficiencies of other minerals, coma, cardiac arrhythmia, and death from cardiac arrest.[62]

Function in plants

Plants require magnesium to synthesize chlorophyll, essential for photosynthesis. Magnesium in the center of the porphyrin ring in chlorophyll functions in a manner similar to the iron in the center of the porphyrin ring in heme. Magnesium deficiency in plants causes late-season yellowing between leaf veins, especially in older leaves, and can be corrected by either applying epsom salts (which is rapidly leached), or crushed dolomitic limestone, to the soil.

• List of countries by magnesium production


• Magnesium oil