By Ryan Young on 4.25.08 @ 12:07AM
The scare stories about lead poisoning are indefensible.
Here's one for the annals of overreaction: Fields made of
artificial turf are being investigated as major health hazards
because some of them contain lead.
Now, fans and players alike have hated artificial turf for
years. Purists don't like the fake-looking fields. Old-fashioned
grass stains on a player's jersey from a diving catch or a hard
tackle are badges of honor, worn with pride. But lead poisoning?
That's a new one.
There's a good reason we haven't heard about this problem
before. There is no evidence of synthetic fields causing lead
poisoning in even a single athlete. Anywhere. Ever.
On a slow news day, that doesn't really matter. Over 250 news
outlets so far have run stories, including USA Today, the
International Herald Tribune, and CNN.
Officials have closed down fields in New Jersey and upstate New
York. The federal government has even decided to get involved. The
U.S. Consumer Product Safety Commission is investigating.
ARTIFICIAL TURF HAS a long and checkered history since its
invention in 1964, quite apart from bogus charges of lead
poisoning. In 1966 it was installed in the Astrodome, then home of
baseball's Houston Astros.
Because of this, it was quickly nicknamed AstroTurf, and the
name stuck. Stadium after stadium soon adopted AstroTurf. Players
and fans didn't much care for it, though. Baseball has mostly
switched back to old-fashioned grass.
Newer, better kinds of turf have been invented, such as
FieldTurf. Softer than AstroTurf, players like the consistent
footing it offers. It also looks more like actual grass. Many NFL
stadiums now feature it. In an appeal to purists, the DD
GrassMaster System combines synthetic fibers and real grass. This
Frankenstein mix now covers hallowed Lambeau Field.
Outside of the big leagues, many schools and parks have been
quietly switching to artificial turf. It can be a money-saver in
the long run because it doesn't need to be mowed or watered and
doesn't require expensive pesticides.
All in all, about 3,500 fields are covered in artificial turf.
In many of the older fields, a compound called lead chromate is
embedded in the pigments covering fibers. It helps a field retain
its color after years of sunlight exposure. The new concern is that
running, sliding, and tackling can dislodge particles from the
field and that players could then inhale or ingest the airborne,
lead-containing fibers.
You can see why this story would lend itself to sensationalism.
Lead poisoning can harm mental development in children, and can
impair the nervous system. Fortunately, as any epidemiologist will
tell you, it is the dose that makes the poison. That dose does not
appear to be in the fields.
One reason is that the lead chromate is encapsulated in plastic
and resin. That keeps it bound to the fiber, so it can do its job
of preventing color degradation. If it didn't stay on the fiber,
there would be no point in using it in the first place.
BUT WHAT IF, critics ask, in the heat of the game, a player ingests
or inhales a dislodged fiber?
The problem with that question is that the nylons and plastics
used in artificial turf are not exactly known for their
digestibility. Our systems can't absorb them. The fibers don't
taste very good, anyway. If one somehow gets into a player's mouth,
he'll spit it out if he can.
That's fortunate because it doesn't take a lot of lead to cause
harm to people. Doses as low as 100 micrograms per liter of blood
can be worrisome. But artificial turf has been in use for more than
40 years now, and not a single case of lead poisoning can be blamed
on it.
One thing that makes the recent scare even more ridiculous is
that lead chromate has been falling out of favor for years, anyway.
Newer fields aren't made of nylon, so it's no longer needed to
prevent fading.
Why, then, is the press scaring people? Perhaps it's because we
like to be scared. Headlines warning of urgent doom are great for
circulation, even when they turn out to be untrue. When's the last
time you read an article all the way through that said,
"everything's fine, nothing to see here"?
Sober, non-sensationalist science reporting is bad for business,
so it gets weeded out over time. Much like H.L. Mencken's theory of
democracy, news consumers are getting what they want, good and
hard.
That's a real shame. The government is now wasting tax dollars
investigating a non-threat because journalists decided to get the
lead out.
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