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A report in the medical journal Osteoporosis International summarized 32 studies conducted between 1977 and 2008 on calcium intake and bone density. The 32 multi-year studies involved 3,169 postmenopausal women, 79 skeletal measures and 7 different types of calcium. AdvaCAL users reported impressive results. With AdvaCAL, average bone density increased +1.5% per year, +3.3% per year compared to a placebo.*  Click here to compare multi-year research results
Reference: Nordin B.E.C.  Osteoporosis Int'l (2009) 20:2135-2143

To compare AdvaCAL research to a specific type of calcium, click on the links below

AAACa Calcium


Calcium Carbonate
(from algae)

Bone Strength Take Care®
Grow Bone®


Calcium Carbonate
(from other)

Coral Calcium

Calcium Citrate



Calcium Citrate Malate


Calcium Gluconate



Calcium Lactate Gluconate


Hydroxyapatite Calcium




A report in the medical journal The Lancet examined results from 17 different studies conducted between 1992 and 2006 on calcium intake and fracture risk. The 17 studies involved men and women over 50, taking 6 different calciums either alone or with vitamin D over multiple years. A study in which participants took AdvaCAL reported an impressive reduction in fracture-risk.* Because the AdvaCAL fracture risk study was small, more research is suggested.

Reference: Tang, B. Eslick, G. et al, The Lancet (2007) 370: 9588, 657-666.


A 2010 study published in the journal, Nutrients, found that AdvaCAL calcium (AAACa) was 57% better absorbed than the most popular type of calcium -- calcium carbonate.  In this study, both AdvaCAL calcium and calcium carbonate were taken with food.   This new study showed a statistically significant improvement in calcium absorption from AdvaCAL using dual stable isotope measurement, considered the gold standard in calcium absorption testing.  Calcium carbonate is used in many calcium supplements, from inexpensive antacids to expensive coral and marine algae calcium brands.  Food consumption tends to level out differences in absorption of calcium supplements.   Earlier research in the calcium field has shown that calcium carbonate is absorbed the same as calcium citrate and calcium citrate malate, when all are taken with food.*

Reference:  Uenushi, K  et al,  Nutrients (2010), 2(7), 752-761;

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