Osteoporosis International

, Volume 11, Issue 11, pp 938–943

Calcium Supplementation with Calcium-Rich Mineral Waters: A Systematic Review and Meta-analysis of its Bioavailability

Authors

  • H. Böhmer
    • Saxon Balneology and Rehabilitation Medicine Research Institute, Bad Elster, Germany
  • H. Müller
    • Saxon Balneology and Rehabilitation Medicine Research Institute, Bad Elster, Germany
  • K.-L. Resch
    • Saxon Balneology and Rehabilitation Medicine Research Institute, Bad Elster, Germany
Original Article

DOI: 10.1007/s001980070032

Cite this article as:
Böhmer, H., Müller, H. & Resch, K. Osteoporos Int (2000) 11: 938. doi:10.1007/s001980070032

Abstract:

The relevance of calcium (Ca2+), an essential bone mineral, to the prevention and treatment of osteoporosis is well established. However, a good deal of evidence casts doubt on the validity of current RDAs (recommended daily allowance), i.e., 800–1000 mg/day. New guidelines consistently advocate higher daily intakes (up to 1500 mg/day), a goal that may be difficult to achieve for many patients. Environmental as well as individual behavioral factors may limit the consumption of dairy products, whereas calcium supplements require a high level of compliance and cause additional costs. Calcium-rich mineral waters may offer a promising alternative. A systematic literature search was performed (Medline, years 1966–1998) to identify experimental studies on the bioavailability of calcium-rich mineral waters. First, all publications on calcium absorption from mineral waters were identified, and, in a second step, studies comparing calcium absorption from mineral waters with that from dairy products. Four studies fulfilled all inclusion criteria. A meta-analysis based on published p values indicated calcium absorption from mineral waters was significantly higher (p= 0.03) than that from dairy products. Although only few studies with a relatively small number of subjects are available to date, the bioavailability of calcium from calcium-rich mineral waters thus seems to be at least comparable to, and possibly better than, that from dairy products. These results are in keeping with the assumption that calcium-rich mineral water is a useful calcium source to achieve new, higher recommended daily allowances of calcium.

Key words:Bioavailability – Calcium – Mineral water – Osteoporosis – Recommended daily allowance

Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2000