Amorphous calcium is absorbed twice as much as calcium carbonate – JBMR Vol.29 Issue 10, October 2014

Principal Investigator: Prof. Nahum Weissman, Director of the Clinical Nutrition Unit, Sourasky Medical Center, Tel Aviv.

The purpose of the study:

Comparison between the rate of amorphous calcium absorption in the gut and that of crystalline calcium carbonate in menopausal women.

Study description:
A randomized, cross-sectional, double-blind study aimed at comparing the bioavailability (intestinal absorption) of the amorphous calcium supplement, DENSITY, with that of crystalline calcium-carbonate.
The study included 15 menopausal women, with no history of serious medical illness or vitamin D deficiency.
The experiment compared the absorption of calcium using the technique, which is currently the "spearhead" in the scientific world, which uses the labeling of the additives in stable isotopes of calcium and allows their monitoring in the body of the subjects (Dual Stable Isotope technique) with maximum accuracy.

Research results:

1. Amorphous calcium absorption in the intestine is twice as high as that of crystalline calcium carbonate when taken after a meal.
2. A single case indicated a 4.6-fold increase in intestinal calcium absorption after taking amorphous calcium compared to crystalline calcium carbonate on an empty stomach.
3. Menopausal women whose calcium absorption was particularly low when taking crystalline calcium carbonate (e.g., those with a low BMI) benefited more from increasing calcium absorption capacity after taking amorphous calcium.

The study was published in the leading scientific journal for the study of bone metabolism – JBMR:

Read more – JBMR Vol.29 Issue 10, October 2014

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