Biological Importance of Calcium and Magnesium

What are Calcium And Magnesium?

Calcium and Magnesium are alkaline earth metals, which have become a necessity in our everyday lives and elements which sustain the human body and help us function properly. These two elements are extremely effective alloy mediums and are used in different industries to serve various purposes. 

For example, Calcium is used to serve as a reducing medium in several industries, whereas Magnesium finds its use in the automotive and aircraft industries. However, their usage is not restricted to the industries in the outside world. Our bodies also require these elements in certain proportions to support the biological needs of our bodies. Not only is this true in the case of animals but also in the case of plants. Their presence in the body is essential as they impact various functions of our body like biological activities and the proper working of our organs. 

Biological Importance of Magnesium

Let us now dive into the biological importance of Calcium and Magnesium to understand their functions better : - 

  • Proper Functioning of Enzymes - Biochemical reactions that take place within our bodies is highly influenced by the presence of Magnesium. Magnesium plays a major part in moderating the activities of the enzymes, which further influences the different chemical reactions that occur in our bodies. Magnesium is an important agent in splitting up the fat and glucose molecules in the body, in the manufacturing of enzymes and proteins and also adjusting and balancing of the cholesterol.

  • Production of Energy Within the Body: Magnesium is essential in the manufacturing of adequate energy in the cells in our bodies. If Magnesium is not present in an adequate quantity, then the production of energy will suffer as, without the magnesium source, nutrients cannot be transformed into Adenosine Triphosphate (ATP), which is the energy within our bodies that can be used. Adenosine Triphosphate is the basic energy supply that the human body requires. Without ATP, the functions of cell reproduction, protein synthesis etc. will suffer. 

  • It helps in Keeping the Human DNA Safe: The main pillar of support for DNA synthesis is the adequate presence of Magnesium, without which DNA synthesis is quite impossible. Magnesium helps in providing balance and smooth operation of the DNA. 

  • Magnesium Helps in Keeping the Electrolyte Balanced: Magnesium provides stability for the electrolyte within our body and thus helps in balancing it. The lack of adequate Magnesium supply will result in dysfunctional activities of the sodium-potassium inside our bodies. 

Biological Importance of Calcium

  • The presence of Calcium is generally found in vast quantities in our bones and also our teeth. 

  • Blood houses a huge amount of Calcium in it. 

  • Calcium helps in the clotting of blood during an injury. Without an adequate amount of Calcium, this clot will take an exceptionally long time to form. 

  • Muscle contraction in our bodies is highly influenced by the presence of Calcium. 

  • If there is a lack of the amount of calcium present in the body, our nerves can go dysfunctional. 

  • The presence of Calcium helps in moderating the metabolic process of nitrogen found in plants. Without an adequate supply of Calcium, the entire growth process of the plants will get impacted as well as the number of chloroplasts in them. 

Interesting Facts About Calcium and Magnesium 


  • There was a time when Calcium and Magnesium were confused with being the same element. 

  • A fire with Magnesium in it can be extremely difficult to extinguish, as it has the capability of burning in various elements like nitrogen, water, and carbon dioxide as well. 

  • Magnesium emits a stunning white light when it burns; therefore Magnesium is usually used in fireworks and crackers. 

  • In case you want to put out a magnesium fire, you should never use water to extinguish it, as it has the capability of burning in water and will only make matters worse. 

  • Magnesium can cure migraine headaches and lessen its duration. 


  • Research is evidence of the fact that Calcium can be used to provide comfort to women going through menstrual cramps and PMS. 

  • A rich vitamin D Diet is required to support the complete absorption of Calcium within your body. Without the presence of Vitamin D, you will miss out on the full advantages of Calcium. 

  • Lack of Calcium can lead to osteoporosis. Osteoporosis is more commonly found in older women. Therefore, older women are recommended for calcium intake than older men. 

  • As they say, too much of anything is bad; calcium intake must also be balanced. Too much of it can cause the development of kidney stones. 

Therefore, we can see how important the role of Magnesium in the human body is as well as the biological function of Calcium for our body to function properly.

FAQ (Frequently Asked Questions)

1. Where can Magnesium be Found on Earth?

Magnesium is found in a huge quantity in the Earth's crust, and there are 60 minerals which have Magnesium in their composition. Magnesium Oxide (MgO) comprises 35% of the total weight of the Earth's crust and happens to be the second most found component in the crust of the Earth. The ocean waters also house a large amount of Magnesium.

2. What Should your Calcium - Rich Diet Include?

Since our body itself does not manufacture Calcium, we need to provide it to our body by eating calcium-rich food. Therefore some of the calcium-rich food you can eat is - green vegetables which include spinach, broccoli, kale, dairy products which include milk, yoghurt, cheese, sardines, white beans, orange juice etc.