Just like Moreless teaches-minerals are absorbed better when they are combined with other trace minerals!
"Egg Shells as a Calcium Supplement
By Hal Ewing, B.Sc. in Nutrition
Egg Shell Calcium presents healthy, balanced calcium support—and is great for women, due to trace amounts of concomitant minerals. Egg Shell Calcium is probably the best natural source of calcium, and is easier for your body to digest and absorb.
The use of egg shells as an ideal calcium supplement is backed by "hard science." Studies show that egg shell minerals can exert beneficial effects on bone density, largely as a consequence of their well absorbed content of calcium.
An added advantage of egg shells is their content of other trace amounts of elements that are useful in building bone e.g. magnesium, sulphur, silicon and boron. Dutch researchers have described recently a highly positive effect of egg shell calcium, (with added magnesium and vitamin D) on bone mineral density.
Egg Shell Calcium Post-Menopause
These researchers treated 85 post-menopausal women between the age of 50 and 70 years in a well controlled scientific study (double blind, placebo-controlled). Laboratory test and measures of bone density were carefully made in these studies and the subjects were divided into three groups.
One group received egg shell powder enriched supplements, the second group received calcium carbonate enriched supplements and the third group received placebo-("sugar" pills, "dummy" medicine). The striking outcome of the study was that only the egg-shell-supplemented group had measurable increases in bone density in their hip bones, after one year of supplements.
The calcium carbonate treated group and placebo treated group showed no significant increase in hip bone density. These findings suggested that egg shell calcium enriched with other nutrients were superior to calcium carbonate (a popular supplement).
Proven...by the chickens!
This documented benefits of dietary supplementation with eggshell powder comes from an unlikely source. This research source is from experiments in chickens themselves! Turkish researchers have studied the effects of various sources of calcium fed to hens on egg production and egg shell quality.
In these studies, hens fed egg shell calcium in their diet produced eggs with thicker shells than hens fed "regular" calcium carbonate. Experiments in young pigs demonstrate that egg shell powder is a better source of calcium than calcium carbonate. In this important study, the ability of calcium to be absorbed from egg shell powder and digestibility and tolerance of egg shell powder was measured and compared with regular calcium carbonate additions to diet.
The results showed that calcium from egg shells was more digestible, compared with regular calcium carbonate. This study also showed that benefits of egg shells as an ideal way of adding of calcium to protein in the diet.
Egg Shell Calcium and Vitamin D
The ideal bone-building combination of egg shell calcium and vitamin D3 is well documented in Japanese studies. Researchers at the Japan Women's University, Tokyo studied a combination of vitamin D3 and egg shell powder in animals with osteoporosis. Not only was the egg shell powder with added vitamin D3 able to improve bone mineral density, it did it without significantly increasing blood calcium levels. It did not cause hypercalcemia like regular calcium carbonate.