Calcium is a mineral found mostly in bones and teeth. It is required for numerous functions in the body, including growth and maintenance of bones, nerve function and muscle contraction. The recommended daily allowance for calcium is 1,200 mg. Research indicates that taking in too much calcium can have adverse health effects.
Milk-Alkali Syndrome
Excess calcium in the body might cause milk-alkali or calcium alkali syndrome, also known as hypercalcemia, according to researchers from the University of Pennsylvania School of Medicine. Milk-alkali syndrome refers to high levels of calcium in the blood that can lead to high blood pressure as well as kidney failure. Postmenopausal women, patients on dialysis, pregnant women and individuals with bulimia are at increased risk of developing milk-alkali syndrome. Scientists stated that limiting calcium to no more than 1.2 to 1.5 g of calcium per day from dietary sources and supplements can prevent milk-alkali syndrome, according to findings reported in the June 2010 issue of the "Journal of the American Society Nephrology."
Prostate Cancer
Researchers from Wake Forest University explored the relationship between calcium levels in the blood and risk of fatal prostate cancer. They reported in the September 2008 issue of "Cancer Epidemiology, Biomarkers & Prevention," that men in the upper range of calcium levels in the blood increased their risk of fatal prostate cancer compared to those in the lower range of calcium levels in the blood. Further research is needed regarding the relationship between calcium levels in the blood and prostate cancer.
Kidneys
Hypercalcemia can increase the risk of developing kidney stones and in severe cases may cause kidney damage that can lead to kidney disease. Too much calcium in the blood prevents the kidneys from cleansing blood and eliminating fluid, according to the Mayo Clinic website.
Hypercalcemia Side Effects
Hypercalcemia can cause a wide range of side effects, including nausea, dry mouth, frequent urination and vomiting. Severe hypercalcemia may lead to a coma and even death, according to the Linus Pauling Institute at Oregon State University. Therefore, consult with your health care provider before taking any calcium supplements, since this may raise calcium blood levels above normal.
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