Aluminium water bottles are a lightweight alternative to plastic bottles, but some health concerns have been raised about their use.
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Aluminium is a common element, and everyone ingests small quantities of it by eating food and drinking water.
High levels of aluminium may cause health hazards. Some studies have shown links between exposure to aluminium and Alzheimer's disease and damage to the nervous system. People with kidney disease who have difficulty eliminating the aluminium from their bodies may be at increased risk of bone or brain disease.
Aluminium water bottles require liners to keep small quantities of aluminium from leaching into the water.
Some of the liners contained Bysphenol A (BPA), which has been linked to hormonal disruptions and cancers. Some manufacturers have removed BPA from their liners. According to one of the manufacturers, SIGG, although the content of the liner material is proprietary, tests showed no leaching of aluminium or BPA.
There are uncertainties associated with determining the health effects from aluminium and other types of water bottles. Plastic water bottles have also been linked to certain health concerns. Plastic bottles labelled #7 PC contain BPA, and bottles labelled #1 and #2 are subject to bacteria and should be washed with warm water daily.
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