What is Coral Calcium, how is it made and what is it good for?

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Coral calcium is growing in popularity among the health-conscious population as it is harvested from coral in Okinawa, Japan. This area has the highest life expectancy in the world and lowest occurrence of cancer and heart problems. This is believed to be thanks to the increased intake of calcium water.

This supplement has been used in bone graft surgery in over 30 years.

There are many questions raised about this type of calcium. For instance, you may be wondering what it is, how it is made and what are the proven benefits of this supplement. Well don’t worry, we are about to dive into the research and literature of coral calcium.

What is Coral Calcium?

This is a form of calcium derived from coral reefs. Coral reefs are found in both shallow and deep waters but most commonly found in shallow waters. They grow in shallow areas specifically to protect the coastlines from natural occurrences like storms and erosion.

So, how is coral calcium made? It gets deposited to coastlines through sand deposits. The coral is then collected and refined to remove any pollutants or chemicals and then it is grounded into powder. The supplements are either sold as the refined powder or made into capsules.

What vitamins and minerals are found in coral calcium?

The supplements usually contain vitamins D and magnesium as well as some trace elements like copper, uranium and mercury. The supplement may contain lead so it is important that pregnant or breastfeeding women avoid these supplements.

Some supplements contain all the 72 trace minerals. This includes the Best Naturals supplement which contains all the 72 trace minerals and it is gluten, lactose and preservatives free.

What is coral calcium good for?

Osteoporosis and bone health problems

Calcium is a building block for bones, it is a nutrient required to keep bones healthy and strong. Without adequate intakes of calcium, bones become weak and susceptible to fractures.

Coral calcium is of similar composition to that of human bone which makes it a great supplement for strengthening your bones. A 2012 study demonstrated that the calcium protects bone from degradation [1]. Another study also shows that coral calcium is absorbed much easier than other calcium types too [2].

May reduce inflammation

Research into coral calcium is still quite fresh and certainly needs more attention. However, early research shows that coral calcium may contain anti-inflammatory properties. The study showed corals to exhibit therapeutic effects on inflammation and also inhibit immune pathways that may increase the severity of inflammation [3].

May contain anti-cancerous properties

Corals contain natural compounds that contain anti-cancerous properties. Coral calcium is a product of corals which may contain these compounds too, but how much, if any, is questionable. Also,  research is very limited and more studies are required before a conclusive decision is made [3].

Reduced high blood pressure

High blood pressure is linked to variety of health problems like heart disease, stroke, heart failure and kidney disease.

Some research suggests that calcium may reduce high blood pressure [4].

However, more research is again required before a conclusion is made.

Foods rich in coral calcium

There are no actual foods that are rich in coral calcium as it derives from coral reefs. These are found in sea and oceans.  However, there are different types of calcium which can be obtained from food sources. You can take a look at our article on minerals here.


Potential intoxication

With coral calcium being collected from coral reefs which reside in sea and oceans, they are likely to be susceptible to contamination. To avoid any intoxication, it is best to avoid supplements sourced from highly polluted waters. You can also take a look at what the manufacturer has done to ensure that any pollutants have been removed from the product.

Kidney Stones

Excessive amounts of calcium can lead to kidney stones. Make sure not to exceed the daily recommended dosage stated on the supplements.


In summary, research on this type of calcium is very new and requires more studies to conclude all these benefits. It is a safe supplement but pregnant or breastfeeding women should take precautions as supplements may contain lead.

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