Evidence supporting the use of: Egg
For the health condition: Calcium Deficiency
Synopsis
Source of validity: Scientific
Rating (out of 5): 3
Eggs, specifically egg shells, have scientific evidence supporting their use as a calcium supplement for treating calcium deficiency. Eggshells are composed of approximately 95% calcium carbonate, which is a bioavailable form of calcium. Several studies have investigated the nutritional value and safety of powdered eggshell as a dietary calcium source. For example, a study published in the "International Journal of Clinical Pharmacology Research" (1999) indicated that eggshell powder can increase bone mineral density in postmenopausal women with osteoporosis. Another study in "Food & Function" (2013) highlighted that eggshell calcium is absorbed at rates comparable to purified calcium carbonate supplements. Eggshells also contain small amounts of other minerals such as magnesium and strontium, which may benefit bone health. The use of eggshell powder is generally considered safe if properly sterilized and ground to a fine powder to avoid sharp fragments. However, the use of whole eggs (without the shell) for calcium supplementation is not supported, as the calcium content in egg white and yolk is minimal. In summary, the use of eggshell powder as a calcium supplement is scientifically validated, though not as widely practiced as traditional calcium supplements. It is important to prepare eggshells correctly to avoid foodborne illness or injury.