Coral calcium is a dietary supplement that is found in coral reefs and shells. It consists of a combination of calcium carbonate and trace minerals. According to the website The Free Dictionary, coral calcium is known for its ability to alter alkaline levels in water-based solutions. This type of calcium is promoted as having numerous health benefits, but there are risks associated with its use. The U.S. Food and Drug Administration has not evaluated coral calcium for its safety, effectiveness or side effects. It is important to consult with a medical professional before taking coral calcium.
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Lead and Mercury Poisoning
People who take coral calcium supplements are at risk for lead and mercury poisoning, according to the website Bonespur. Some coral calcium supplements contain trace amounts of lead or mercury, which can poison the body over time. When someone ingests lead or mercury, these elements move along the body to the brain and are stored in the liver, kidneys or bone marrow. Severe neurological damage can occur when excess an amount of mercury accumulates in organ tissue. In order to avoid an overdose of coral calcium, it is important to contact a medical professional before taking this supplement.
Some people may experience an allergic reaction while using coral calcium, according to the MayoClinic.com. Shellfish typically live amongst coral reefs so there is good possibility that people who are allergic to shellfish will have a similar allergy to coral calcium. An allergic reaction may consist of hives, swelling or loss of breath.
A serious side effect associated with prolonged amounts of higher-than-normal doses of coral calcium is kidney stones, according to the website AboutCalicum.net. Large amounts of calcium oxidate in the urine can trigger kidney stone formation. The MayoClinic.com states that kidney stones are hard painful deposits that combine and crystallize inside of the kidneys. Symptoms of kidney stones may include severe pain that starts around the flank or back and travels to the lower abdomen, groin or urinary tract, chills, painful urination, red or pink urine, nausea, vomiting, fever or upset stomach.