Tag: allergies

Allergies: Are We Too Clean?

  • This label on a package of cookies has six foods of the Big Eight. Over 90 percent of food allergies are caused by just eight foods: milk, eggs, peanuts, tree nuts such as almonds, soy, wheat, fish and shellfish. (Photo by Lester Graham)

Doctors say problems with allergies are
increasing. Up to 30% of Americans are
allergic to something. Rebecca Williams reports
doctors are trying to figure out why allergies are
on the rise:

Transcript

Doctors say problems with allergies are
increasing. Up to 30% of Americans are
allergic to something. Rebecca Williams reports
doctors are trying to figure out why allergies are
on the rise:

Micaela Keller is ten years old. Her world is full of things that might
make her sick.

“I’m allergic to pollen, ragweed, anything in the daisy family, nuts, all
nuts, dairy, soy, cats and grass.”

Food allergies are usually the worst allergies. Micaela says she knows
right away if she accidentally eats something she’s allergic to.

“When I have soy I will get really itchy and might get red in the face. My
lips might start swelling up or something.”

In the worst cases… allergic reactions can make it hard to breathe.
Sometimes, your airways can shut down, your blood pressure can drop and you
can die.

Experts say cases of food allergies have doubled over the past 10 years.
Kids have seen the highest increases. But no one knows exactly why.

Dr. Marc McMorris treats kids’ allergies. He’s in charge of the Food
Allergy Clinic at the University of Michigan.

He says our immune systems are so complex that there’s probably not a simple
explanation. He says there are probably at least three different things
going on.

First, allergies run in families. If both parents have allergies, there’s a
70 to 80% chance their child will have allergies.

Second, there’s the way we process food in this country. Take peanuts for
example. Dr. McMorris says dry roasting peanuts makes them more likely to
cause reactions.

Then… there’s the third thing and it’s really causing a lot of debate.
It’s called the hygiene hypothesis. The idea is: we might be too clean for
our own good.

“The immune system is put there for survival, to fight
bacteria, viruses and parasites and that type of thing and in the last 50 to 80
years we’ve had antibiotics, vaccines and a much cleaner world, and if the
immune system doesn’t have to worry about those issues as much it’s going to
find something else to do.”

So… instead of constantly fighting off bacteria… the immune system
thinks something as harmless as a peanut butter sandwich… is going to hurt
the body. So the immune system treats the peanut butter like an invader.

Dr. McMorris says there’s evidence that the more germs you’re exposed to
early in life, the less likely you are to have allergies. He says it
doesn’t make sense to go back to a dirtier lifestyle. But he says we should
be careful about some things… like not over-using antibiotics and harsh
antibacterial soaps.

He also says being exposed to some kinds of bacteria might help. He says
there’s evidence that having pets in the house might make you less likely to
develop allergies.

“The data for pets would say if you have three or more cats or dogs within a
household that you have a lower risk for allergies.”

That’s because you’re exposed to a certain bacteria animals carry. It might
help your system fight off allergies.

But Dr. McMorris says it’s not a good idea to rush out and get a litter of
kittens if you already have allergies in the family. That could make the
problem a lot worse.

Remember Micaela, the girl with all the allergies? Her mom thinks having
pets in the house does help.

(Joy to dogs: “Say hi. High five!” dogs bark)

Joy Keller says her kids have grown up with dogs. They’ve been tested and
it turns out they’re not allergic. So their doctor said they should keep
the dogs. Keller says they just have to vacuum more often.

“We’ve been told right from the beginning, keep where they sleep clean but
don’t be obsessive about cleaning, they have to live in this world and so
the world is not a sterile place.”

The world is not a sterile place. But maybe… we’re trying to make it a
little too sterile.

For the Environment Report, I’m Rebecca Williams.

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Kid Allergies on the Rise

New research suggests that kids today have a harder time outgrowing
milk and egg allergies than kids in past generations. Rebecca Williams
reports:

Transcript

New research suggests that kids today have a harder time outgrowing
milk and egg allergies than kids in past generations. Rebecca Williams
reports:


Milk and egg allergies are the two most common food allergies in the
US.


Researchers at the Johns Hopkins Children’s Center followed children
with milk or egg allergies for more than 13 years. They found that
both types of allergies were harder for today’s kids to outgrow.


Dr. Robert Wood directs Pediatric Allergy and Immunology at Johns
Hopkins. He says these allergies tend to last into middle school, and
sometimes into high school or college years:


“In my 20 years of practicing pediatric allergy my impression would be
that there really is a tendency toward more severe allergy and that the
disease of food allergy is behaving differently than it used to
behave.”


Dr. Wood says it’s not yet known why this could be happening. But he
says researchers are focusing on finding ways to better treat these
aggressive allergies in kids.


For the Environment Report, I’m Rebecca Williams.

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Breathing Easier in Hotel Rooms

We’ve all heard those disgusting stories about the dust mites and mold lurking in those seemingly beautiful hotel rooms. But there’s new technology that’s attempting to clean up even what you can’t see, and to make you feel better. For the GLRC, Joyce Kryszak has more on the allergy-friendly rooms that scientists are putting to the test:

Transcript

We’ve all heard those disgusting stories about the dust mites and mold lurking in those seemingly
beautiful hotel rooms. But there’s new technology that’s attempting to clean up even what you
can’t see, and to make you feel better. For the GLRC, Joyce Kryszak has more on the
allergy-friendly rooms that scientists are putting to the test:


They’re in there all right. And we’re not talking about the hotel guests. There are millions of bed
bugs, mold spores and other nasty things you wouldn’t want to sleep with. And no amount of
housecleaning, even in the nicest hotels, is going to chase them all out. So what’s a weary
traveler to do? Call in the professionals:


“We clean and sanitize the air-handling system, clean and sanitize all the soft surfaces. We
apply a shield to every surface in the room. We shock the room with ozone. We encase the
mattresses and pillows with mattress and pillow encasements. We install a purification system. And we filter chlorine from the water in the shower,” said Tom Pickles.


Tom Pickles is director of operations for Pure Solutions. The company is one of those taking
part in this new, experimental research. They have an arsenal of what they call seven different
interventions. The company uses a process that combines chemistry and technology, to
prevent or greatly reduce air born pollutants. Pickles says it’s definitely needed especially in
hotel rooms, where people aren’t the only ones enjoying the fine linens:


“The conditions inside your mattress and inside your pillow are very hospitable to a dust mite,”
said Pickles. “Their favorite food in the world is dead skin cells. You lay in your bed, you toss
and you turn and you’re constantly shedding dead skin cells. As you do that the dust mites will come
up from the bowels of your mattress, eat your dead skin cells and then go back down into your
mattress.”


Okay, that’s gross. But don’t pack for home just yet. Some hotels, such as this Marriot in
Buffalo, are offering what indoor air experts are calling “allergy-friendly rooms.” The idea is to
first literally shield everything in the room from microscopic mold and bacteria. Robert Baier
heads a research center at the University at Buffalo. He says the room is misted with a
chemical barrier:


“And so you create a vapor of a silicone. It goes to the surface and it makes it like an easy-
release surface, just like if you would have an easy-release label that you were going to stick
onto an envelope,” said Baier.


But what about the dust mites? Where do they go? Well, the experts agree some still might be
hanging out. But mattresses and pillows are covered with tightly woven microfiber wraps that at
least keep you from inhaling what they leave behind. What does break through all these
barriers is then filtered away.


The advanced technology filters are used in air conditioning units and under the bed, constantly
processing and pulling out air contaminants. Baier says that makes breathing a whole lot easier.


“We’ve got living cells, called macrophages, which are like zambonis that are cleaning the ice at
the ice rink, and they’re cruising around the base of the lung all the time, dealing with cleaning up
these particles,” said Baier.


He says on a bad day, or in a room with poor air quality, that can mean lungs get over-taxed,
and that means people get sick easier. But scientists at UB want to make sure these new
technologies are actually doing what they advertise.


Baier demonstrates the hand-held device used to sample the air. The readings indicate that the
particle count does drop, about 75% once you leave the hallway and enter the purified room.
But he says more scientific tests will be done on the actual air particles. If tests bear out the
claims, it will be good news for the hotel industry. But Baier says scientists hope to find out if
the process could be used in hospitals and other places where air quality is critical:


“We’re very much concerned about eliminating infection, which as you know has become a big,
big problem as we’re getting into antibiotic resistant micro-organisms,” said Baier. “We think
that’s because of the hiding places that these organisms are finding in things like air conditioning
units, in coils and filters.”


For now, industry officials are glad to be making hotel stays a bit more pleasant for travelers in
several states around the country. The cost to convert and maintain each room is roughly 2,500
dollars. But right now, some hotels are offering the rooms for no extra charge, just to get
people comfortable with the idea of being able to breathe a little easier.


For the GLRC, I’m Joyce Kryszak.

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Relief on the Horizon for Allergy Sufferers?

  • To those who may recoil in terror from this picture, relief from peanut allergies may just be a vaccine away. (Photo by Mike Froese)

A new vaccine that reduces food allergies in dogs could
some day help people who suffer dangerous reactions to food like
peanuts, milk and wheat. The vaccine is also more evidence in
support of the so-called “hygiene hypothesis.” The Great Lakes
Radio Consortium’s Tracy Samilton reports:

Transcript

A new vaccine that reduces food allergies in dogs could some day help people who suffer
dangerous reactions to food like peanuts, milk and wheat. The vaccine is also more
evidence in support of the so-called “hygiene hypothesis.” The Great Lakes Radio
Consortium’s Tracy Samilton reports:


Allergies to foods like peanuts have become much more common over the past 20 years.
Some researchers believe it’s because, as a hygiene-conscious society, we’re no
longer exposing our bodies to infections that stimulate the immune system and protect
us from allergies. Pediatrician Dale Umetsu of Stanford University mixed a component
of Listeria bacterium and peanuts into a vaccine. He then gave it to dogs
with allergies so severe that one peanut made them sick.


“After the treatment, the dogs could tolerate up, on average, to 30 to 40 peanuts,
so this was quite an increase and the effect lasted several months, at least,
after the treatment.”


Umetsu says it could be five years or more before a vaccine is available for human trials.
A vaccine could help millions of people with food allergies.


For the Great Lakes Radio Consortium, I’m Tracy Samilton.

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Kids Using More Prescription Drugs

Environmentalists and health officials often worry about the widespread use of antibiotics in cattle. But a recent report points to another concern: the rising use of such drugs in children. Researchers found a jump in the number of children taking prescription drugs. The Great Lakes Radio Consortium’s Mark Urycki reports:

Transcript

Environmentalists and health officials often worry about the widespread use of antibiotics in
cattle. But a recent report points to another concern: the rising use of such drugs in children.
Researchers found a jump in the number of children taking prescription drugs. The Great Lake
Radio Consortium’s Mark Urycki reports:


The survey was conducted by MEDCO, a pharmacy benefit management firm, and a division of
drug maker Merck. It found that prescription drug-use in children under 19 increased 85% over
the last five years. Although children still take fewer drugs than adults, MEDCO researchers say
it was the first time usage increased faster for kids than all other age groups.


The top drug use was antibiotics, with more than a third of the surveyed patients receiving such a
prescription each year. Health officials have expressed concern that the overuse of such drugs
could lead to drug-resistant bacteria.


A MEDCO researcher said the good news is that antibiotic use has at least flattened out. The
increased incidence of allergies, though, has not and the use of prescription allergy medicine
doubled from about 6% in 1997 to nearly 12% last year. Health officials suspect nearly twice as
many children today have allergies than 25 years ago.


For the Great Lakes Radio Consortium, I’m Mark Urycki.

Engineering a Cleaner Pig

Like most farmers, hog farmers have seen a shift from small, family-owned farms, to large-scale hog operations, but more pigs on less land creates some major environmental problems – especially, what to do with all that manure. Bio-tech researchers in Canada believe they have created an animal that will help. The Great Lakes Radio Consortium’s Mark Brush has more:

Beetle Juice

They pushed for nutrition labeling on food. And they put out exposesabout movie theater popcorn and Chinese food. Now, theCenter for Science in the Public Interest is at it again. This timethey’re taking on beetles – or at least, a food coloring made from thebugs. The Great Lakes Radio Consortium’s Wendy Nelson reports:

El Nino Brings Early Allergy Season

The tropical weather pattern known as El Nino has been blamed for floods in California and tornadoes throughout the South. In the Great Lakes Region, El Nino has brought warmer than usual temperatures. And as the Great Lakes Radio Consortium’s Tom Scheck reports, the mild winter has health care professionals worrying about this year’s allergy season: