Evidence supporting the use of: Limestone
For the health condition: Calcium Deficiency
Synopsis
Source of validity: Scientific
Rating (out of 5): 3
Limestone is primarily composed of calcium carbonate (CaCO3), which is a well-established source of calcium in both dietary supplements and food fortification. The use of calcium carbonate to treat or prevent calcium deficiency is supported by scientific evidence. Calcium carbonate is one of the most common forms of calcium used in supplements due to its high elemental calcium content (approximately 40%) and widespread availability. Clinical studies have shown that calcium carbonate is effective in increasing serum calcium levels and improving bone mineral density, particularly when dietary intake of calcium is insufficient.
The bioavailability of calcium from calcium carbonate is considered adequate, especially when taken with food, as stomach acid enhances its absorption. However, in individuals with reduced stomach acid (such as older adults), calcium citrate may be preferred. Limestone as a raw material is not ingested directly; rather, highly purified forms of calcium carbonate derived from limestone are processed for human consumption.
Multiple health organizations, including the National Institutes of Health (NIH) and the World Health Organization (WHO), recognize calcium carbonate as a safe and effective means of supplementing calcium. Therefore, the use of limestone-derived calcium carbonate for treating or preventing calcium deficiency has a strong basis in scientific research, though it is important to note that the raw mineral is not consumed directly but rather as a purified supplement.
Other health conditions supported by Limestone
Acid IndigestionCalcium Deficiency
Indigestion
Overacidity