Buying Calcium Supplements? Caution is Urged by Michele Stewart, ARIZONA DAILY STAR, Tucson, Arizona on Friday, November 24, 2000
When it comes to buying calcium supplements, you might be getting more than you paid for.
Not in a good way, however. According to research published in the Sept. 20 issue of the Journal of the American Medical Association, calcium in high doses, containing small amounts of lead, can damage the nerves, blood cells and digestive system or even cause permanent brain damage.
And usually the brands that cost the least contain the most lead, which can lead to irreversible health problems.
"What I tell people is to go with a name brand and go with USP (United States Pharmacopeia)-labeled brands," said Cyndi Thomson, a research instructor and registered dietitian with the University of Arizona's College of Public Health and the Arizona Cancer Center. Thomson said that if it's a well-recognized name, you're probably safe because large, reputable companies have more to lose and are more apt to stand behind what they sell.
Linda Johns, a sales associate with New Life Health Centers, and John Hathcock, vice president of nutritional and regulatory science for the Council for Responsible Nutrition, agree that name brands are the safest way to go. And both agree that bone meal, dolomite and oyster shell calcium should be avoided.
"These sources are where lead toxicities are higher, because they are derived from earth," Johns said.
She recommended brands such as Nature's Life and Solgar.
Hathcock said calling the company to obtain data on lead levels is another option.
And though companies may claim their supplements are 100 percent lead free, Hathcock rebutted that claim. "There is no such thing as a calcium source that has no lead; whether it's natural or not," he said.
Hathcock said it is not possible to prepare a calcium supplement that has absolutely no traces of lead in it: "The idea of lead-free is a regulatory definition."
Experts suggest that the body's daily exposure to lead shouldn't exceed 6 micrograms per day. Hathcock said that supplements made to meet Recommended Dietary Allowances shouldn't exceed 5 micrograms.



