Can You Taste the Iron in Your Water? - By: Dr. Victor Machione

A new study says that, as people age, they may lose the
ability to detect the taste of iron in drinking water. This
piece of startling health news raises the concern that older
adults could be at risk of over-exposure to iron.

Researchers point out that tasting the metallic flavor in
water can help people limit exposure to metals such as
iron.
This trace element, required by the body to transport
oxygen in red blood cells, is found naturally in water or
from the corrosion of iron water-supply pipes. However,
doctors' advice to all patients is that you need less iron after
the age of 50.

That metallic flavor in water, caused by the dissolved iron
and copper commonly found in groundwater or that may
leak into tap water from corroded pipes, has been an issue
for both consumers and utility companies.

More than two million miles of the United States' water
and
wastewater pipes are nearing the end of their useful life.
But, these facilities, which are generally underground,
don't attract too much attention. This study is highlighting
the fact that attention may be necessary.

Studies also suggest that older people who consume too
much iron -- especially in natural supplements and iron-
rich
foods -- may be at increased risk for Alzheimer's disease
and other age-related conditions. Add to this that scientists
have long known that taste perception fades with age. So
what were the gaps in knowledge about how aging affects
perception of a metallic flavor in water?

In a study with 69 people, researchers identified a
distinctive age-related decline in people's ability to taste
iron. People over age 50 tended to miss the metallic taste
of
iron in water, even at normal levels above the thresholds
set
by the U. S. Environmental Protection Agency and the

World Health Association.

This may have implications for other metals of health
concern. What springs immediately to mind is copper from
copper pipes. Copper is in fact less flavorful than iron and
is believed to be more toxic.

If you are concerned, inquire about having your water and
pipes tested for mineral levels. See what help your local
government can provide as well.

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