What is the Difference Between Calcium and Magnesium?

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Calcium and magnesium are both essential minerals required by all cells to function properly, but they play different roles in the body. Here are the main differences between calcium and magnesium:

  1. Function: Calcium works outside of the cells, exciting the body and playing a role in blood clotting, bone health, and muscle contraction. Magnesium, on the other hand, works inside the cells, calming the body and playing a role in blood flow, soft tissue health, and muscle relaxation.
  2. Calcium-Magnesium Ratio: The appropriate ratio of calcium to magnesium is important for optimal health. Most people can agree that a 2:1 ratio (calcium to magnesium) is a good rule of thumb. This means that if you consume 1,000 to 2,000 mg of calcium per day, you should also consume 500 to 1,000 mg of magnesium.
  3. Absorption: Calcium absorption varies but averages around 30% of overall intake. Magnesium is generally more bioavailable than calcium. Calcium should be taken in smaller doses several times a day, while magnesium can be taken in one dose per day.
  4. Food Sources: Both calcium and magnesium can be obtained through a balanced diet. Food sources high in calcium include dairy products, leafy green vegetables, and fortified foods. Food sources high in magnesium include dark green vegetables, legumes, nuts, and whole grains.
  5. Deficiency: Calcium deficiency can lead to issues such as bone loss, brittle nails, and tooth decay. Magnesium deficiency can lead to muscle spasms, irregular heartbeat, low energy, and attention deficit hyperactivity disorder (ADHD).

In conclusion, calcium and magnesium are both essential minerals, but they play different roles in the body and should be consumed in balance to maintain optimal health.

Comparative Table: Calcium vs Magnesium

Here is a table comparing the differences between calcium and magnesium:

Property Calcium Magnesium
Atomic Number 20 12
Appearance Dull grey metal with a pale yellow tint Shiny grey metal
Standard Atomic Weight 40.078 24.305
Group and Period in the Periodic Table Group 2, Period 4 Group 2, Period 3
Electron Configuration [Ar] 4s² [Ne] 3s²
Abundance in Earth's Crust 5th most abundant element 9th most abundant element

Both calcium and magnesium are alkaline earth metals found in group 2 of the periodic table of elements, but they are in different periods due to calcium having one extra electron shell. They have different chemical and physical properties, with calcium appearing as a dull grey metal with a pale yellow tint, while magnesium is a shiny grey metal. Calcium has a higher atomic weight and is more abundant in the Earth's crust than magnesium.