The NOF does not recommend specific brands or products. You should try to get at least 1,200 mg of calcium daily in diet plus supplements, if needed. The most common type of calcium supplement is calcium carbonate, which should be taken with meals to assure good absorption. Another type of calcium supplement is calcium citrate, which can be taken with or without food. It is best to take no more than 600 mg of calcium at one time. Getting more calcium than you need is not beneficial and may be harmful. For more information, including tips for finding a product that is safe, please visit http://www.nof.org/prevention/calcium2.htm . You can test a calcium supplement for absorption, by placing it in vinegar for 30 minutes. If it doesn't dissolve in about that time, it may not dissolve well in your stomach.
The NOF recommends 800-1,000 international units of vitamin D every day for people age 50 and older. Some people need more. You can find out if you are getting enough vitamin D by having a blood test for 25-hydroxyvitamin D. This is discussed in more detail at http://www.nof.org/prevention/vitaminD.htm (scroll down to "Lab Test to Check Your Vitamin D Level").
Regarding magnesium, most of us get an adequate amount in our diets. Dietary sources of magnesium that are especially good include beans, nuts, seeds, legumes and a variety of vegetables such as spinach, artichoke and okra. People who eat a healthy diet get an adequate amount of magnesium for their bones. If there are malabsorption problems, your healthcare provider should be able to provide guidelines for taking a magnesium supplement. Extra magnesium may also be helpful when calcium supplements cause constipation, since it has a mild laxative effect that may result in normal bowel function. There are products available that combine calcium and magnesium in a single pill that are useful when both need to be taken.View Thread
When repeating a bone density test, it's usually best to use the same machine and have it done at the same place, provided it is a high quality facility with experienced staff that are properly trained. This allows for the best possible comparison with your last test result.View Thread
If you are a postmenopausal woman or man age 50 or older, be sure to ask your healthcare provider when you should have a bone density test. If you're a woman age 65 or older or a man age 70 or older and have never had a bone density test, you should have one regardless of risk factors. Medicare insurance will often pay for this test every two years and sometimes more frequently depending on your medical condition.View Thread