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Calcium Absorption Claim
EZorb is Calcium Anhydrous Aspartate, and like most difficulttopronounce ingredients, is not the best thing to be ingesting. It costs little to manufacture, but with a very good marketing story it sells for a relatively high price. Most Calcium Brands are simply not complete products, but we find the Ezorb marketing story runs contrary to proven science and dangerously misleads people for several reasons.
In their website, they claim a world record 92% Calcium absorption which is up to 20 times higher than any other calcium supplement. They have presented no clinical evidence to support this exaggerated claim in spite of the scientificlooking graphs and text.
Arguably the leading Calcium researcher in America is Dr. Dr. Heaney, an independent University research scientist, has tested dozens of calcium forms over the years and has found most to have acceptable absorption. Contrary to popular marketing hype, published studies show most Calcium supplements today are about 30% absorbed quite acceptable compared to the 4.6% absorption implied by Elixir above. In a recent Journal of Nutrition article Heaney discusses the usually exaggerated marketing claims of superior performance of one Calcium salt relative to another, saying this emphasis seems inappropriate and misdirected from both costbenefit and nutritional considerations6. In other words, calcium bioavailability is constantly presented as a bigger problem than it really is by calcium manufacturers eager to demonstrate a market advantage. 115 We have no affiliation to Dr. Heaney, but find his independent research more compelling than the marketing hype of Elixir Industry. Most calciums are absorbed sufficiently so there is no advantage to one that is 92% absorbed. If you read on, you will see a significant disadvantage of highly absorbed calcium, though.
Ezorbs Big Kidney Stone Fallacy
Their claim that any calcium supplement which is not completely absorbed contributes to kidney stones is based on very old, and highly speculative information which has long since been refuted over and over. In fact the very opposite is true unabsorbed Calcium prevents kidney stone formation! We take great exception to companies trying to scare an often elderly population into buying their products with out of date information. Many recent studies show that the free calcium which is not absorbed combines with oxalates and other toxins, so it is very helpful for cleaning up the blood and PREVENTING kidney stones.
Discussing calcium and kidney stones, Professor Robert Heaney says nutritionally, there seems to be very little advantage to improving absorbability because unabsorbed calcium exhibits valuable functionality in its own right. Calcium remaining in food residue forms complexes with harmful substances left over from digestion, such as oxalic acid, unabsorbed fatty acids and bile acids. This complexation is the mechanism by which high calcium diets reduce the risk of kidney stones and colon cancer.
Heaney continues Theoretically, calcium sources with high intrinsic absorbabilitycould meet the bodys skeletal needs for calcium, but they would leave unmet the detoxification function that unabsorbed calcium serves In brief, there is little or no nutritional advantage to ingesting ones calcium in a form with absorbability higher than that of natural calcium sources 6. In other words, if Ezorb really is 92% absorbed you are missing the protective effect against kidney stones and colon cancer that less absorbed Calcium forms offer.
Bone Growth, Not Calcium Absorption is Key
Ezorb has no reputable clinical research supporting bone growth, the study they refer to was done in China, a country known for scientific corruption. Just a few days ago the head of the Chinese FDA was sent to jail for allowing this kind of corruption to occur. Bioavailability is only one relatively unimportant first step. The real issue is bone growth which has not been demonstrated in any real clinical study. Testimonials are interesting, but they do not prove a products efficacy.