Some real facts about foods with available calcium

​All foods listing milligrams of Calcium per serving

Yogurt, plain, low fat, 8 ounces        415    

cheddar cheese, 1.5 ounces      307

Milk, whole, 8 ounces      276 

  

Turnip greens, boiled, ½ cup    99

Broccoli, raw, ½ cup      21

               

Figures from the National Institutes of Health.

link

 

Additional reading about the importance of calcium or the lack there of from the NIH

 

In the critically ill patient calcium, magnesium and phosphate metabolism, are often disturbed with an alteration in intake, increased liberation from bone and damaged tissue and reduced excretion (e.g. during renal failure), causing alterations in extracellular concentrations and subsequent disordered organ function.

 

http://www.ncbi.nlm.nih.gov/pubmed/16573443