As radon awareness grows and more people become aware about the dangers associated with this silent killer, we’ll begin to hear about more areas that are particularly susceptible to it. It turns out that Iowa happens to be right in a radon hotspot.

Elevated Radon Gas Is a Big Problem In Iowa

The United States Environmental Protection Agency estimates that more than 21,000 Americans die each year due to elevated radon gas exposure. As such, it is the second leading cause of lung cancer and the leading cause in non-smokers.

People may live with extremely high levels of the deadly gas in their home for years — decades even — without ever knowing it’s lurking there. It is odorless, colorless and tasteless which means it’s virtually indetectable. In fact, the only way to discover it’s presence is to run a test specifically for it.

One Iowa resident tested her home for radon shortly after attending the Iowa Cancer Consortium presentation in 2012. Cynthia Wolff bought a couple DIY radon testing kits and checked the elevated radon gas levels in her Northwest Iowa home. She also tested the clinic where she worked, another place where she spent a majority of her time.

“My home was at a 40.”

That’s 40 picocuries per liter (pCi/L) which is ten times the recommended action limit as set by the U.S. EPA. The limit — at 4.0 pCi/L — is the highest level one can safely live with. Anything higher than that level requires mitigation, which involves installing a ventilation system to remove the deadly gas from inside the home or residence. Exposure to 4.0 pCi/L is the equivalent of smoking a half a pack of cigarettes per day. Every 15 pCi/L above that limit is equal to another full pack. So in Wolff’s case she was being exposed to elevated radon gas at the equivalent of smoking three and half packs of cigarettes per day.

That means her risk for contracting lung cancer is extremely high depending on how long she was exposed to that amount of elevated radon gas.

Wolff followed up with the test by hiring experienced professional to install a mitigation system.

“I had mitigation done on my own home — as fast as I could get them out there.”

She went on further to say that her clinic — where she works — was found to have 28 pCi/L. She encouraged her employees to test their homes, as well.

“Everyone in my office also was high — in the danger zone,” Wolff said.

Test Your Home for Elevated Radon Gas Immediately

The Iowa Department of Public Health estimates that there are 400 Iowans every year who die as a result of radon-induced lung cancer. In comparison, those numbers are about the same as annual traffic fatalities in the state. It’s a big deal, and it’s a problem that many have no idea about.

It’s time to get in the know. Read up on elevated radon gas and it’s associated dangers. You can find plenty of information here at Radon Resources. You can also read the source article linked below.

Via: The Gazette (Iowa)

Elevated radon gas levels are extremely hazardous to one’s health, especially when exposure happens over an extended period of time. Any structure, whether it be a residence, apartment or business can be susceptible to the deadly gas. It stands to reason that anyone aware of this issue would want to take action immediately, in order to prevent their health from failing.

You see exposure to high radon gas levels is the second leading cause of lung cancer in many countries over including the United States, Canada, Europe and more. That’s why it comes as no surprise that a worker at the Ministry of Natural Resources and Forestry fish hatchery in Dorion, Ontario has refused to work in an area found to have elevated radon levels.

Elevated Radon Gas Levels Lead to Work Refusal at Dorion, Ontario Fish Hatchery

It appears the unnamed worker has a valid claim, as the location currently exhibits levels well above Health Canada’s recommended action limit. The radon gas levels at the location have long been monitored, and several ventilation improvements have even been made to lower them. Unfortunately, it doesn’t appear that any previous mitigation attempts have been successful.

Since the worker refused to spend time in the affected area, it has gained attention from the Ministry of Labour who is currently inspecting the property and related radon gas levels. The Ministry has yet to release any information about their inspection or what locals should do — including workers from the hatchery.

In an email to CBC News, MNRF communications officer Joshua Henry explained that “the situation is being managed by adjusting fish culture practices in the area of concern in order to reduce the amount of time that other staff spend in that area. This is consistent with Health Canada’s guidelines.”

Test for Elevated Radon Gas Levels Immediately

This just goes to show that radon can, in fact be a problem anywhere. If you have not already tested your residence or business for the presence of high radon gas levels, you should do so immediately. Every day that you spend inside a structure with elevated radon gas levels, means a higher risk that you’ll contract lung cancer. The sooner you take action — by testing and then installing a mitigation system if necessary — the sooner you and your family can return to healthy living.

While it’s true that mitigation can be costly for large businesses, that’s not the case when it comes to a residential home. DIY radon testing kits can be purchased at any local hardware store or online for relatively cheap. In addition, radon professionals can be hired to carry out the testing, as well as install a mitigation system if elevated levels are indeed discovered.

Via: CBC News

One of the first things we always discuss is whether or not radon gas is a problem in your home or residence. Unfortunately, that’s not the only place where it can wreak havoc on your health. Elevated radon gas levels can also exist inside the workplace. Since most of us while our days away at work it’s entirely possible for exposure to lead to serious health problems. Radon gas is the second leading cause of lung cancer in the United States and many countries over, after all.

The recommended action limit as set by the U.S. EPA is 4.0 pCi/L. Exposure to that amount of radon gas on a daily basis is equal to smoking a half a pack of cigarettes per day. Every additional 15 pCi/L on top of that is equal to another full pack of cigarettes. Needless to say, the higher the radon gas levels in a building or residence the higher the risk for contracting lung cancer.

Radon Gas Is the Second Leading Cause of Lung Cancer

Not so worried because you think you can beat lung cancer? Think again. It has one of the highest mortality rates of any form of cancer. This is because there are no short term symptoms — there are no short term symptoms for radon gas exposure either. By the time most diagnosed patients have begun to experience any symptoms, the disease has progressed beyond a curable state. This is not said to dishearten anyone currently affected by the disease, but instead to point out how serious this issue is.

Radon is responsible for the deaths of more than 21,000 Americans each year. That means it’s not a contained issue and it’s a lot more severe than most would care to admit. Since radon is a naturally occurring gas released from elements such as Uranium when they undergo radioactive decay — and those exist commonly in soil and rock — it can be a problem anywhere. Even worse, it doesn’t matter if your neighbor’s home is safe or dangerous, your residence will most certainly have different levels. The same goes for the workplace and various businesses.

Radon gas seeps into a building through cracks in the foundation, walls and flooring and unless there’s a mitigation system installed to ventilate the gas it collects in abundance, and can cause the serious health issues described above. Worse yet, it’s odorless, colorless and tasteless which means it’s virtually indetectable. In fact, the only way to identify whether or not it exists is to test specifically for it.

Test Your Workplace for Radon Gas Today

We urge you to find out from employers or managers whether or not your workplace has been tested for the deadly gas. If you are in a position of authority, then have your business tested if it hasn’t been already. You can purchase a relatively inexpensive DIY radon testing kit from any local hardware store or online. If you don’t want to deal with the process yourself, you can also hire an experienced professional to do the work. If you go the latter route, the professional can also advise you what to do if elevated levels are discovered.

The sooner you have your workplace tested the better, because the longer you spend in a building or residence exposed to the silent killer the more chances you have of contracting lung cancer. That risk is boosted exponentially if you also smoke tobacco — of any kind.

Nevada residents will be able to get their hands on a free radon testing kit, from December 1 through February 28, 2015. If you’re wondering how to do so, the University of Nevada Cooperative Extension offices will be distributing the tests, and those interested in acquiring one just have to get in touch and apply.

Nevada Residents May Acquire Free Radon Testing Kit

Photo by WPB Radon

The first question that will cross many of your minds is: why would I want a radon testing kit and why would I want to test my home? The answer is simple. Radon is a serious health hazard and it could very well be a problem in your residence. Your family may have been exposed to radon for years now without you even realizing it. The gas is odorless, colorless and tasteless so the only way to discover its presence is to use a radon testing kit.

Don’t believe radon is a problem for you or your family? Think again. Radon is the second leading cause of lung cancer in the United States, responsible for the deaths of more than 21,000 Americans each year. While the recommended action limit is 4.0 pCi/L — the level at which users should take action to remove the gas from their home as set by the US EPA — exposure to every additional 15 pCi/L is equal to smoking a full pack of cigarettes per day. In case you still need that spelled out for you, exposure to radon significantly increases the risk for contracting lung cancer. It is entirely possible for you or your family to get lung cancer, even if you’ve never smoked a day in your life. If you have smoked any kind of tobacco, that risk is increased exponentially in combination with radon exposure.

Long story short, you definitely want to use a radon testing kit and test your home. If you don’t want to purchase a DIY radon testing kit and test your home yourself, you can always hire an experienced professional to do so. If you choose to go the professional route, they can also advise you what to do if elevated levels are discovered inside your home — which involves installing a mitigation system to vent the deadly gas.

Why You Absolutely Need to Test Your Home With A Radon Testing Kit

Want to hear some more local statistics? In Nevada alone, it is estimated that one in every four homes tested in the state have been found to contain elevated levels of radon well above the recommended limit. Just living in a residence with levels equal to 4.0 pCi/L is the equivalent of smoking a half a pack of cigarettes per day. At that rate it’s not a matter of “if” you’ll contract lung cancer, but when. The biggest problem with that is, lung cancer has an extremely high mortality rate. This is because it does not show any short term symptoms — and neither does radon poisoning for that matter. By the time symptoms crop up in lung cancer patients enough that they can be diagnosed, generally the disease has already progressed beyond a curable state.

You don’t want lung cancer and you don’t want anyone in your family to be plagued by it. So, apply for your free radon testing kit immediately and have your home tested. You can also purchase a DIY radon testing kit from local hardware stores or online.

The sooner you test your home and discover whether or not there’s a problem, the sooner you can take action and ensure you and your family have a safe living environment.

Via: Reno Gazette-Journal

We are constantly featuring news stories from all over the world here at Radon Resources that discusses the widespread problems and concerns of radon gas. Most people don’t realize that it’s a naturally ocurring gas which can exist anywhere.

Tralee Area Homes in the Republic of Ireland Susceptible to Radon Gas

Photo by Android Bennett (Flickr)

Proof of that exists today as information is being released in the Republic of Ireland about a local radon gas problem. As it turns out, an estimated one in five homes and businesses in the Tralee area are expected to have elevated radon gas levels well above the recommended action limit of 200 Bq/m3 (becquerels per cubic metre). In addition, according to the local Environmental Protection Agency, more than 20% of homes or properties in the area have levels above the recommended limit.

Just as it happens with other areas of the world, some local homes have been found to contain levels well over the limit bordering on extremely hazardous. In some cases, those radon gas levels are ten times or greater the recommended limit. Exposure to every additional 148 Bq/m3 is about the equivalent of smoking a quarter pack of cigarettes per day. In other words, constant exposure to radon levels equaling 592 Bq/m3 is the equivalent of smoking a whole pack of cigarettes per day. Even worse, if you do smoke and you’re also exposed to radon gas your risk for cancer increases exponentially even beyond that.

Radon is the second leading cause of lung cancer the world over. It’s responsible for the deaths of more than 20,000 Americans and 1,100 UK citizens each year. The most unfortunate thing about that is it can be prevented easily. One simply needs to test their home for the presence of the deadly gas and take action if elevated levels are discovered. Taking action entails having a mitigation system installed which is a relatively inexpensive ventilation system that ejects the radon gas from inside the residence, home or property.

In the Tralee area alone, as many as 400 homes could be at risk for elevated levels of radon gas. It’s naturally produced by elements such as Uranium as they undergo radioactive decay, and those elements are commonly found in soil and rock. The Tralee area has an abundance of limestone deposits, which have also been linked to high radon production. This is extremely problematic for local residents of both the Tralee and Castleisland areas.

Test Your Home for Radon Gas

As mentioned above, it’s a good idea to have your home, business or property tested for the presence of the deadly gas. There’s nothing worse than finding out your home — the one place that should be a safe haven for you and your family — is slowly killing you.

You can purchase a DIY radon testing kit at a local hardware store or online. If you don’t want to bother with the process yourself, you can hire an experienced professional for around €50. If you enlist the help of a professional they can also advise you about what to do if elevated levels are indeed discovered.

Keep in mind, it doesn’t matter whether your closest neighbor has found elevated radon gas levels or safe levels. Every home will be different, regardless of how close — or far — apart they are from each other. In addition, the overall design and construction of the home matters little.

Via: Independent.ie

Thanksgiving is almost upon us, and while a large majority of people will be indulging in good food, great times with family and friends and perhaps even some serious shopping a few will be spending their holidays in the hospital or at home sick. If that saps your joy and happiness, it’s a good thing. You see, our intent is not to ruin or taint the holidays for you, but merely to remind you that there are hidden dangers out there.

Radon Gas Might Be Seeping Into Your Home

Photo by Tim Sackton (Flickr)

One of the most hidden and lesser known dangers is the presence of radon gas, which can exist in any home, residence or business. While you’re visiting family this week, or while they are visiting you there’s a big chance you could all be exposing yourselves to extremely high levels of radon gas. Before you claim that it’s not a problem in your home, or that it’s rare to find consider this: radon induced lung cancer claims the lives of more than 20,000 Americans each year. In addition, it the second leading cause of lung cancer, and the leading cause in non-smokers. And you probably thought that smoking cigarettes or cigars was the only way to contract lung cancer, right?

Since radon is a naturally ocurring gas, released by elements such as Uranium that commonly exist in soil and rock it can be a problem anywhere. Outside in the fresh air where it can disperse evenly it’s not such a problem. However, indoors where it can collect in great abundance and concentrated amounts it can do some serious harm to your body.

The radioactive radon daughters make their way into your lungs where they stick to the inner linings. They continue to undergo radioactive decay, turning your lung cells cancerous. It’s so dangerous that exposure to radon increases the risk of lung cancer exponentially. For every additional 15 pCi/L above the recommended action limit — set by the U.S. EPA at 4.0 pCi/L — it is equal to smoking one pack of cigarettes per day. So if the levels in your home are 34 pCi/L or higher, exposure to that amount of radon gas is the equivalent of smoking two packs a day.

Even if you never smoke a day in your life, you can still get lung cancer due to radon gas exposure. Worse yet, if you do happen to smoke than your risk increases even more in combination with radon exposure.

Test for Radon Gas Immediately

The only way to find out whether or not radon gas is a problem in your home, is to test specifically for it. Luckily, you can purchase a DIY test at any local hardware store or online. You can also hired experienced professionals to test your home for you.

If elevated radon gas levels are discovered, there’s no reason to panic. That said, you need to take action immediately to alleviate the problem which calls for installing a mitigation system to ventilate the concentrated radon gas out of your home. Mitigation systems are not overly expensive, and most cost anywhere from $1,500 to $2,500 depending on the system used and the setup of your home.

So while you’re enjoying the holidays this year and giving thanks for everything you have, why not take a moment to consider your good health and the good health of your family. When you get a moment, conduct a test in your home to find out whether or not radon gas is a health hazard for you. The sooner you take action, the sooner you can return to living a healthy, happy life.

It stands to reason that the few people that are aware of radon gas know it’s dangerous. In fact, many of you have probably heard the warnings before. There’s no reason to be concerned though, it won’t happen to you and it’s not a problem in your home, right?

Wrong. Radon gas is extremely hazardous to one’s health, and it can be a problem anywhere – even your home.

Most People Are Unaware Radon Gas Is a Health Hazard

According to a national survey ordered by the Canadian Cancer Society, only one in three participants had any clue that radon gas poses serious health concerns. Nearly the same percentage of participants indicated they are aware the radioactive gas can be “very harmful.” More importantly, about a quarter — out of the 1,238 total participants — had no idea radon is even a problem, or that it exists.

This isn’t an issue confined to just Canada, either. While it is estimated that 3,000 Canadians die each year from radon-induced lung cancer, more than 20,000 Americans die each year from the same thing. The most unfortunate thing about that is most of the health effects, and radon gas exposure can be easily prevented.

Test Your Home for the Presence of Radon Gas

By testing your home for the presence of radon gas, you can identify the abundance of the odorless, colorless and tasteless gas in your home. If levels are found to be above your country’s recommended action limit (4.0pCi/L in the U.S. and 200 Bq/m3 in Canada), then you can take action by installing a mitigation system either yourself or by hiring a professional.

Radon is released naturally, as it’s a radioactive decay product of elements such as uranium, commonly found in rocks and soil. When it is released outdoors, it disperses openly into the air at very low levels – so low they’re not dangerous. However, indoors and within confined spaces it builds up in great amounts becoming much more dangerous.

As people are exposed to radon gas, their risk of lung cancer increases over time similar to smoking tobacco. In fact, the risk of contracting cancer from smoking elevates exponentially when combined with radon gas exposure, as well.

Despite all of this substantial danger, you’ll be surprised to know that 96% of the survey participants have yet to test their homes for the presence of radon gas. About half of that demographic indicated they would move promptly, should elevated levels of radon be discovered in their home. The latter stat is pretty silly, especially when you consider the fact that a mitigation system is relatively inexpensive. A newly discovered radon problem is hardly a reason to move, however it is certainly a reason to take immediate action.

The online survey was conducted on October 22-19, 2014 by Angus Reid, and it included information from 1,238 randomly selected Canadian adults.

Via: CBC News (Health)

Photo by Robert Stern (Flickr)

After what was found to be “record high” levels of radon gas in the Center Valley, Pennsylvania area the state Department of Environmental Protection is requesting that residents have their home tested for the silent killer. The agency has disclosed some of the test results of homes in the area, several of which had over 1,000 pCi/L (picocuries per liter) of radon. One home was even found to have radon levels at 2,750 pCi/L, which happens to be the highest recorded value in the state.

It goes without saying these are thousands of times higher than the recommended action limit of 4 pCi/L as set by the U.S. EPA. Exposure to every additional 15 pCi/L per day is the equivalent of smoking a full pack of cigarettes. That said, the radon levels discovered in Pennsylvania are extremely hazardous to one’s health.

The acting DEP Secretary Dana Aunkst says that this is just proof that everyone needs to be made aware of the dangers of radon.

“This community serves as an important reminder to all Pennsylvania residents to test their homes for radon. Protect yourself and your family from this invisible, cancer-causing, radioactive gas.”

Testing is encouraged indeed, for everyone. It doesn’t matter whether you live in Pennsylvania or elsewhere in the country. Radon is the second leading cause of cancer, responsible for the deaths of more than 20,000 Americans each year. It’s a serious issue, that most people aren’t even aware of.

Radon is an odorless, colorless and tasteless gas that can seep into homes through cracks in the foundation, walls and flooring. New homes are built using radon resistant construction and yet they are still susceptible to radon. This is because it’s naturally released as a decay product of elements like Uranium, which commonly reside in the soil and rock under the surface. Since the elements are common, and found in soil, radon can be a problem anywhere regardless of geographical location.

Center Valley Homes Found to Have Extremely High Radon Levels

Colleen Connnolly, a spokeswoman for the DEP says that state law prohibits the agency from revealing the addresses of the tested homes. Apparently, they were clued in as to the high risk of radon once several homes were tested and results were collected. After a test is conducted, they are generally mailed in to a lab where the results are identified and documented.

“We’re probably dealing with homes that are in a 5 to 7-mile square mile area.”

To take action, the agency has sent out more than 500 letters to homes in the area urging residents to test for elevated radon levels. In addition, they’ve also reached out to the Southern Lehigh School District to find out if the schools in the area have also been tested.

Have Your Home Tested for Elevated Radon Levels

It just so happens that winter is one of the two seasons ideal for testing, the other is summer. This is because the doors and windows stay closed most often during the winter, and cold weather can directly influence the radon levels in a home. This is generally when radon levels are at their highest in a home, because they remain sealed for so long. It’s also beneficial for the testing process, which requires that you leave your doors and windows closed during the testing period anyway.

Radon tests can be purchased from hardware stores and some retailers. You can also acquire DIY testing kits online and have them shipping to your home address. If you’re not comfortable conducting the test yourself, you can hire an experience professional to do it for you. That’s the ideal solution, because they can offer advice and guidance if elevated radon levels are discovered, which will require a mitigation system be installed to ventilate the deadly gas.

The DEP agency says that radon has been found in all 67 counties in the state of Pennsylvania, which means the state is definitely “prone to elevated radon levels.” To add to that, about 40 percent of homes in the state are estimated to have radon levels above the recommended action limit. One in fifteen homes in the country are estimated to have elevated radon levels.

Keep in mind, this is not a problem isolated to Pennsylvania, or just certain high-risk states for that matter. It’s a problem anywhere and everywhere.

Via: Morning Call

Nearly 18,000 homes in Glouchestershire England will receive letters from the Public Health England (PHE) department, warning them of the high risk of radon gas in their area. Areas such as Cotswold District, Forest of Dean District and Cheltenham Borough have the highest risk for elevated levels of radon gas. Officials are urging residents to test their home for the presence of the silent killer, or hire a local a professional to do so.

Radon Poses a Serious Health Risk

Photo by Public Health England

Radon is the second leading cause of lung cancer in many countries including Canada, England and the U.S. In the U.S. alone it’s responsible for the deaths of more than 20,000 Americans each year. More than 1,100 deaths occur each year in the U.K. The sad part is that it can be easily prevented, especially since the health issues cause by exposure to radon as well as lung cancer symptoms do not crop up until a person has been exposed for a long time.

Neil McColl of the PHE’s Centre for Radiation, Chemicals and Environmental Hazards, said that, “It has long been known that the Cotswolds and parts of Gloucestershire are radon hotspots.” So this is not a new development, yet many people that live in these areas have no idea radon poses a threat.

He went on further to point out some of the other areas known for elevated radon gas levels.

“Parts of Cornwall, Aberdeenshire and West Oxfordshire also have high levels and over the years we have worked with people there to help them find out if their home is affected and if it is, to take action to reduce their radon levels.”

It’s more important that residents take action as soon as possible. This means having your home tested right away, and hiring a radon professional to install a mitigation system if elevated levels are found.

“It’s important people do act because long term exposure to high levels of radon can lead to lung cancer.”

It’s also worth noting that radon can seep into any home regardless of geographical location or composition. Most new homes are built using radon resistant construction, but that doesn’t necessarily make them immune to the problem. Since radon is released naturally by elements such as Uranium – commonly found in soil and rock under the surface – it can be a problem anywhere.

In addition, it doesn’t matter if your neighbor’s home has lower levels there can still be hazardous levels in your own home – that’s why you need to test.

Many Glouchestershire England Homes to Be Offered Free Radon Testing Kits

According to McColl, the PHE will be sending letters to households in the affected areas over the next couple of weeks offering them a free testing kit. About 8,100 letters will be sent to households in the Cotswold District area, 9,700 in the Forest of Dean District area and about 190 to homes in the Cheltenham Borough area.

The hope is that these letters will encourage homeowners to have their home tested. At the very least, it should help raise awareness about radon gas and its associated dangers.

Via: BBC News

Gretchen Polhemus host of Good Things Utah had John Seidel, owner of Radon Be Gone, visit her home and test for the presence of radon. The move was an effort to help boost awareness about the deadly gas, which many have no clue even exists. Despite that, it’s responsible for the deaths of more than 20,000 Americans each year. This is because it’s the second leading cause of lung cancer, the first in non-smokers.

Gretchen’s home was found to have levels of 2.1 pCi/L, which is below the recommended action limit as set by the U.S. EPA. If levels are discovered to be above that in a home, then a mitigation system needs to be installed which ventilates the gas.

However, one thing we always talk about here at Radon Resources is that any home can be susceptible to the gas, new or old. In addition, just because your neighbor doesn’t have elevated radon levels, doesn’t mean they can’t exist in your own home.

Every Home Should Be Tested for Elevated Radon Levels

In the case of Gretchen’s neighbors, Seidel tested two other homes in her neighborhood and found dangerously high elevated radon levels. One of the homes was found to have levels three times the recommended limit, equal to smoking almost an entire pack of cigarettes per day. Each additional 15 pCi/L in a home is equal to smoking a full pack of cigarettes.

Believe it or not, if elevated radon levels are discovered it’s relatively inexpensive and a fairly easy fix too. A few people are too scared to test because they’re afraid the entire process will be costly. If you don’t want to pay for an experienced radon professional to test, you can always purchase a DIY radon testing kit at local hardware stores and online. However, we certainly recommend hiring a professional contractor to install a radon mitigation system. If it’s not installed properly it can just make the elevated radon levels much worse.

If Elevated Radon Levels are Discovered…

In most cases, a professional radon mitigation contractor will drill a hole in the foundation, and run a pipe to the roof – either through the house or on the exterior – with an attached fan that helps ventilate the gas. The radon gas is then released into the open air where it disperses, no longer a serious health hazard for anyone including the residents. Of course, the area surrounding the vent is hazardous and so can any leaks in the pipe. This is why regular maintenance and subsequent tests are required to ensure the system is working properly.

In Utah, where Gretchen and Seidel are located, the risk of radon is quite high. It is estimated that every one in thirteen homes in the state have elevated radon levels, unbeknownst to residents. It’s not a problem that’s just isolated to Utah, either. Radon is a problem everywhere, since it’s released naturally by elements commonly found in soil and rock in the ground, such as Uranium.

The moral of the story here – as always – is to have your home tested for radon, or conduct a test yourself. Radon causes the most damage over an extended period of time. Symptoms of lung cancer won’t even show until later stages of the disease. This means the sooner you have your home tested and fixed – if there is a problem – the more likely your family will live a long, happy and healthy life.

Via: Good 4 Utah