Scientists urge lower limits on fluoride

Mar 23, 2006

Some scientists are reportedly urging federal limits on fluoride in drinking water be lowered.

The scientists say high levels of naturally occurring fluoride in drinking water are leaving some children at risk of tooth enamel damage and adults prone to weakened bones that could lead to fractures, The Los Angeles Times reported Thursday.

Many cities with low levels of naturally occurring fluoride add it to their water supplies to protect against tooth decay. Those cities, said the panel, are unaffected by the new findings because their levels of fluoride are much lower than the federal standard.

The U.S. Environmental Protection Agency requested the panel from the National Academy of Sciences examine the EPA's standard that allows 4 parts per million of fluoride in drinking water supplies.

The panel found about 200,000 Americans have drinking water with fluoride concentrations at or above the EPA's limit, while approximately two-thirds of U.S. citizens -- 62 million people -- drink water in which fluoride concentrations are much less than the amount the panel found resulted in adverse health effects.

The scientists found about 2 ppm seems to protect most people from the health problems, The Times said.

Copyright 2006 by United Press International

Explore further: CAT scan of nearby supernova remnant reveals frothy interior

add to favorites email to friend print save as pdf

Related Stories

Science denied: Why does doubt persist?

Oct 12, 2012

The sign in front of the tall display case at the Smithsonian Institution's Museum of Natural History lures visitors to "meet one of your oldest relatives." Inside stands a morganucodon, a mouse-like animal ...

Recommended for you

Planck: Gravitational waves remain elusive

14 minutes ago

Despite earlier reports of a possible detection, a joint analysis of data from ESA's Planck satellite and the ground-based BICEP2 and Keck Array experiments has found no conclusive evidence of primordial ...

Going a long way to do a quick data collection

6 hours ago

Like many a scientist before me, I have spent this week trying to grow a crystal. I wasn't fussy, it didn't have to be a single crystal – a smush of something would have done – just as long as it had ...

How are planets formed?

6 hours ago

How did the Solar System's planets come to be? The leading theory is something known as the "protoplanet hypothesis", which essentially says that very small objects stuck to each other and grew bigger and ...

What's happening in the universe right now?

7 hours ago

There are some topics that get a little frustrating in their pedantry, but can really draw attention to the grand scope and mechanics in our Universe. This is definitely one of them.

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.