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TITLE:
Variation in the mineral content of commercially available bottled
waters: implications for health and disease.
AUTHORS: Garzon P; Eisenberg MJ
SOURCE: Am J Med 1998 Aug;105(2):125-30
ABSTRACT: PURPOSE:
Although the annual consumption of bottled water in North America
is 12.7 gallons per capita, little is known about the potential health effects of these
waters.
We reviewed the amounts of major minerals found in commercially
available bottled waters, the recommended daily allowances for these minerals, and their
beneficial and harmful effects.
METHODS:
We obtained the mineral content of various commercially available
bottled waters in North America and Europe from The Pocket Guide to Bottled Water. We then
conducted a Medline search to identify articles examining the beneficial and harmful
effects of magnesium, sodium, and calcium.
RESULTS: Great variation exists in the mineral content of
commercially available bottled waters. Among the bottled waters that we reviewed, the
magnesium content ranges from 0 to 126 mg per liter, the sodium content ranges from 0 to
1,200 mg per liter, and the calcium content ranges from 0 to 546 mg per liter.
Epidemiologic and clinical studies suggest that magnesium may
reduce the frequency of sudden death, that sodium contributes to the occurrence of
hypertension, and that calcium may help prevent osteoporosis.
CONCLUSION: The ideal bottled water should be rich in magnesium and
calcium and have a low sodium content. Because there is great variation in the mineral
content of commercially available bottled waters, the actual mineral content of bottled
water should be considered when selecting one for consumption.
The information provided is intended for informational purposes only. It
is not meant to either directly or indirectly give medical advice or prescribe treatment.
Unless specifically referenced, the information has not been scientifically validated or
approved by any government or regulatory agency. Please consult your physician or other
licensed health care professional for medical diagnosis, prescription, and treatment. |