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Home » How to Avoid Radiation Poisoning

How to Avoid Radiation Poisoning

Adam Green By Adam Green September 29, 2026 13 Min Read
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How to Avoid Radiation Poisoning
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Estimated reading time: 8 minutes

How to Avoid Radiation Poisoning

If you are within the blast radius of a modern day nuclear weapon, you are pretty much dead on impact. There is no amount of prepping or body armor that will save you. Your bunker will probably prove useless as well considering there will be little to no warning. Also, it will probably come in the dead of night for the West coast.

One long-term, high ranking, retired veteran told me, “Everything stays still at night; the targets stay still. Also, it’s daytime over there while we sleep.”

While many preppers are preparing to survive a nuclear strike, I think the focus should be on preparing to deal with the radiation and fallout, because if you are caught in the blast radius then you will probably die immediately, but if you are caught just outside the blast radius, you will die slowly and painfully unless you know what to do.

If the bomb is detonated on the surface, large plumes of radioactive material will be thrust into the atmosphere and come down as fallout. This stuff is most deadly if inhaled or ingested in any way. What most survivors of a nuclear attack will be fighting is radiation sickness.

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Symptoms of Radiation Sickness

So, what are we all concerned about when it comes to radiation? It is the radiation sickness that follows. This can be deadly or have serious lasting effects on our health.

In Hiroshima and Nagasaki, Japan, the thermal radiation caused incredible burns and killed over 100,000 people. But there are also reports that up to 200,000 more people died by 1950 from cancers linked to the radiation.

Here is a list of symptoms most often attributed to radiation sickness:

  • Extreme fatigue
  • Ringing in the ears
  • Frequent colds or increased infections
  • Unexplained bleeding or small red spots on your skin
  • Fever or burns
  • Headache or confusion
  • Nausea, vomiting, or bloody diarrhea

Nuclear Threats

1. China / Russia / North Korea

While tensions between the United States and these countries seem to be the most obvious threat, it’s clear they are not quite ready to attack us. However, that could change. People in the Pentagon have been warning of a conflict with China in the coming years, and now there are signs that Russia is going to attack NATO countries. And North Korea is a wild card. Considering all this, there are plenty of reasons to prepare for the worst.

2. Terrorists

The most likely nuclear bomb attack would come from within the nation. It would be a smuggled nuclear weapon delivered in a truck. It sounds archaic, but it has the best odds. There is no relying on trajectory and military technology.

3. Power Plants

There are 94 commercial nuclear reactors in this nation. Do you know if you are near one? This is very important information. They are not going away, and from the standpoint of pure radiation, these plants can be the most devastating.

Setting Up a Radiation Shelter

When it comes to radiation, it is all about insulation. How much space and stuff can you put between yourself and the exposed area?

The very worst-case scenario is if you are outside in the radiation. Direct exposure near fallout will be the most destructive to human health. If you are caught outside during a nuclear disaster, your number one priority should be to get inside the nearest structure, any way you can.

This is a life or death issue.

Once inside, you can prepare for radiation and fallout by getting into the very core of your home. If you have a pantry or a room at the center of your house, this is where you will want to be. Use mattresses and other insulative materials to build a shelter if you do not have a room away from windows.

If you have a basement or any underground space, that’s even better than a center room. The more earth, concrete, and mass you can put between yourself and the fallout, the safer you’ll be. A middle floor of a large building works too, as long as you stay away from the roof and the outside walls where fallout settles. The idea is simple: get to the most buried, most surrounded spot you can find.

Whatever room you use, it should be stocked, or you should take your preps into this room, quickly.

  • Food
  • Water
  • Communications (emergency radio)
  • First Aid
  • Light
  • USB Power Source

One thing worth knowing: any food or water sealed in cans, bottles, or packaging is safe to use even if it sat in the house during the fallout. The container keeps the radioactive dust out. Just wipe down the outside before you open it. What you don’t want to touch is anything that was left out uncovered, or fresh produce and water from open sources.

Once you have placed a barrier between yourself and the radiation, you will have to consider the situation for your next move.

There are two very distinct scenarios that you will have to understand. Each will affect how long you stay in that shelter.

Scenario 1

You are experiencing the fallout of a blast either from a bomb or an explosion at a local nuclear plant. This fallout could be dense, but in this situation, you must remember the 7:10 radiation rule:

The 7:10 Rule of Thumb states that for every 7-fold increase in time after detonation, there is a 10-fold decrease in the exposure rate. In other words, when the amount of time is multiplied by 7, the exposure rate is divided by 10. For example, let’s say that 2 hours after detonation the exposure rate is 400 R/hr. After 14 hours, the exposure rate will be 1/10 as much, or 40 R/hr.” – FEMA.gov

While you may not know the initial exposure rate, you can find solace in the fact that you are going to see a significant drop in radiation over 7 hours and even more after 14.

As a rule of thumb, plan to stay inside your shelter for at least 24 hours unless emergency officials tell you otherwise. That first day is when the fallout is at its most dangerous, and every hour you wait lets those levels keep dropping.

It’s tempting to run out and check on family or property, but stepping outside too early is one of the worst mistakes you can make. Get inside, stay inside, and stay tuned to your emergency radio for the all-clear.

Scenario 2

This is a much worse scenario where you could be near an exposed reactor core that is melting down. If the situation is such that a steady stream of radiation is affecting your immediate area, you will have a greater challenge.

A Fukishima style disaster that puts out a consistent amount of radiation will mean the exposure rate will not apply to the above 7:10 rule.

If you are close to a nuclear power plant, you will need to have more preps and take more precautions than the average person. These plants can cause widespread, long-term damage.

If you find yourself caught in a radiological situation like this, be sure that you have an emergency radio so you can get the best recommendations and know whether help is on the way.

Nuclear Disaster Specific Preps

We will forgo the basics such as food, water, shelter, and first aid. Hopefully, you already have these things in place. Instead, I want to focus more on the gear for dealing with radiation and fallout.

  • Potassium Iodide Tablets – These will saturate your thyroid and keep it from up taking radiation that can be spread throughout your body. Just understand what these tablets can and can’t do. They only protect your thyroid, and only from radioactive iodine. They won’t shield the rest of your body or guard against other radioactive materials, so they aren’t a cure-all. Timing matters too, so take them when authorities advise rather than at the first sign of trouble. They also aren’t right for everyone, so check with a doctor ahead of time if you can, especially for anyone with a thyroid condition or an iodine allergy.
  • Geiger Counter – Radiation is measured by rads and you can find several things that will read this. The expensive Geiger counter is the most common. You can also buy something called a NukAlert that will warn you with a selection of beeps about the radiation levels.
  • Baking Soda – Baking soda can be used externally to wash and decontaminate skin, or it can be used internally. Uranium binds with the sodium bicarbonate and pulls it away from organs and skin. If you are dosing orally, be sure you mix the baking soda thoroughly with water before you drink it. 1-2 teaspoons in a full glass of water is a typical dose of baking soda.
  • Soap and Water – Having access to soap and water is critical if you have been exposed to fallout or radiation. You need to get your clothes off and away from you and your family. Store them in a Rubbermaid or sealable bag. Meanwhile, wash down with soap and water. A couple of tricks make this a lot more effective. Just taking off your outer layer of clothing can remove up to 90 percent of the contamination, so that’s the first move. When you wash, use lukewarm water and a gentle touch. Don’t scrub hard enough to break the skin, and skip the conditioner when you wash your hair, because it can actually bind radioactive material to your hair. Blow your nose and gently wipe your eyelids and ears too, since debris collects there.
  • Respirator Masks – While you won’t need a full-on gas mask unless you live near a power plant, having access to a respirator or quality N95 mask will allow you to filter out much of the radioactive debris. Radiation washes off the skin, but it is very hard to get out of the body.
  • Eye Protection – If you have to step outside for any reason, be sure to have eye protection to keep radioactive debris out of your eyes.

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