Are Airport Scanners Safe Pregnant? | Guidance for Expecting Travelers

Airport security scanners, including both walk-through metal detectors and advanced imaging technology (AIT) body scanners, are generally considered safe for pregnant individuals.

Navigating air travel brings a unique set of considerations, especially when you are expecting. A frequent question for many pregnant travelers revolves around the safety of airport security screening technologies. Understanding how these systems work and what official bodies advise can help alleviate concerns and ensure a smooth journey.

Understanding Airport Security Screening

Airport security checkpoints utilize various technologies to screen passengers and their belongings. For travelers, the primary concern often centers on the body scanners. These devices fall into two main categories: walk-through metal detectors and advanced imaging technology (AIT) scanners.

Walk-Through Metal Detectors (WTMDs)

• WTMDs operate by generating a low-frequency electromagnetic field. When a metal object passes through this field, it creates a disturbance, triggering an alarm.
• These detectors do not use X-rays or any form of ionizing radiation. They employ non-ionizing electromagnetic fields, which are similar to those produced by many household appliances.
• The exposure from a WTMD is minimal and momentary, posing no known health risks to pregnant individuals or their unborn babies.

Advanced Imaging Technology (AIT) Scanners

• AIT scanners, often referred to as “body scanners,” use millimeter wave technology. This technology emits very low-power radio waves, similar to those used in cell phones, but at a much lower intensity.
• Millimeter wave scanners create a 3D image of the body to detect objects hidden under clothing. The waves penetrate clothing but reflect off the skin, creating an outline without revealing anatomical details.
• These scanners use non-ionizing radiation, meaning they do not have enough energy to remove electrons from atoms or damage DNA. The energy levels are extremely low, well within international safety standards.
• While some older “backscatter” X-ray scanners existed, they have largely been phased out in favor of millimeter wave technology at US airports. Even backscatter scanners were designed to emit extremely low doses of ionizing radiation, considered safe by health physics experts.

Handheld metal detector wands, used for secondary screening, operate on similar principles to walk-through metal detectors, using electromagnetic fields rather than X-rays. Their use is also considered safe for pregnant travelers.

The Science of Scanner Safety

The core of understanding airport scanner safety for pregnancy lies in distinguishing between different types of radiation and their effects. Medical and scientific consensus consistently affirms the safety of current airport screening technologies for expectant mothers.

The key distinction is between ionizing and non-ionizing radiation. Ionizing radiation, such as X-rays used in medical imaging (like chest X-rays or CT scans) or cosmic radiation at high altitudes, carries enough energy to potentially damage cellular DNA. Non-ionizing radiation, conversely, does not. Airport scanners primarily use non-ionizing radiation.

• Millimeter Waves: The AIT scanners use millimeter waves, a form of electromagnetic radiation. These waves are non-ionizing. They do not penetrate the skin or internal organs and do not cause molecular changes or DNA damage. The energy absorbed by the body from a millimeter wave scan is thousands of times less than the energy absorbed from simply standing in direct sunlight for a minute.
• Electromagnetic Fields: Walk-through metal detectors and handheld wands create low-frequency electromagnetic fields. These fields are also non-ionizing. The exposure is brief and the energy levels are too low to cause any biological effects on a developing fetus.

The levels of radiation exposure from airport scanners are minuscule, far below any thresholds known to cause harm. To put it in perspective, the exposure from a single AIT scan is less than the background radiation a person receives naturally in a few minutes of daily life on Earth. The radiation from a cross-country flight, due to cosmic radiation at altitude, is significantly higher than any exposure from airport security screening devices.

Official Guidance for Expecting Travelers

Major health and travel safety organizations have consistently addressed the safety of airport scanners for pregnant individuals. Their guidance helps travelers make informed decisions.

The TSA states that all screening technologies used in airports are safe for all travelers, including pregnant individuals, as they meet national and international safety standards. This includes both walk-through metal detectors and advanced imaging technology (AIT) scanners. The agency provides information specifically reassuring pregnant passengers about the minimal and non-harmful nature of these devices.

Medical organizations globally, including those specializing in obstetrics and gynecology, echo this sentiment. They generally advise that the levels of radiation and electromagnetic fields from airport security scanners are too low to pose a risk to pregnancy. The consensus is that there is no scientific evidence suggesting that these scanners cause miscarriage, birth defects, or any other adverse pregnancy outcomes.

For general health advice regarding travel during pregnancy, the CDC advises pregnant travelers to discuss their travel plans with their healthcare provider to ensure they are up-to-date on necessary vaccinations and health precautions for their destination.

Airport Scanner Technologies Explained

Scanner Type	Technology Used	Radiation Type	Safety for Pregnancy
Walk-Through Metal Detector (WTMD)	Pulsed Electromagnetic Field	Non-ionizing	Safe
Advanced Imaging Technology (AIT)	Millimeter Waves	Non-ionizing	Safe
Handheld Metal Detector Wand	Electromagnetic Field	Non-ionizing	Safe

Your Choices at the Checkpoint

Even with assurances of safety, some pregnant travelers prefer to avoid electronic screening. You have the right to request an alternative screening method at the security checkpoint.

Requesting a Pat-Down

• You can inform a TSA officer that you are pregnant and would prefer to opt out of the AIT scanner or even the walk-through metal detector.
• Upon your request, you will be offered a pat-down as an alternative. This is a standard procedure for individuals who opt out or alarm the screening equipment.
• The pat-down will be conducted by an officer of the same gender in a professional and respectful manner. You can request to have the pat-down performed in a private screening area, away from the main checkpoint.
• You also have the right to have a travel companion or another witness present during the pat-down, provided they are also cleared through security.

Communicating your preferences clearly and calmly to the security officer is the most effective way to ensure a comfortable screening experience. They are accustomed to these requests and are trained to accommodate them.

Preparing for a Smooth Journey

Thoughtful preparation can significantly reduce stress and enhance comfort when traveling while pregnant. A few simple steps can make a big difference at the airport and beyond.

Before You Go

1. Consult Your Healthcare Provider: Always discuss your travel plans with your doctor. They can provide personalized advice based on your health, the stage of your pregnancy, and your destination. They might offer a doctor’s note, which can be helpful if you need to explain your condition or carry specific medications.
2. Understand Airline Policies: Check with your airline regarding their specific policies for pregnant travelers, especially concerning travel restrictions in later stages of pregnancy. Many airlines require a doctor’s note for travel after a certain gestational week.
3. Pack Smart: Prioritize comfort and essentials. Wear loose, layered clothing and comfortable, slip-on shoes for easy removal at security. Pack any necessary medications, prenatal vitamins, and snacks in your carry-on bag.

At the Airport

1. Stay Hydrated: Carry a reusable water bottle and fill it after clearing security. Dehydration can be a concern, especially during air travel.
2. Move Frequently: If you have long waits, try to walk around gently to promote circulation. On the plane, stand up and stretch every hour or two if possible, or perform seated leg exercises.
3. Communicate Your Needs: Do not hesitate to inform airport staff or flight attendants if you need assistance or feel unwell.

Essential Packing for Pregnant Travelers

Category	Items to Consider	Purpose
Health & Wellness	Prenatal vitamins, approved medications, doctor’s note	Maintain health, address needs
Comfort	Loose clothing, comfortable shoes, travel pillow	Reduce fatigue, improve circulation
Sustenance	Water bottle, healthy snacks, nausea remedies	Stay hydrated, manage hunger
Documentation	ID, insurance card, medical records copy	Easy access to vital information

Debunking Common Scanner Myths

Misinformation can sometimes circulate, leading to unnecessary worry about airport scanners. Addressing these common myths with factual information helps clarify the situation for pregnant travelers.

• Myth: Airport scanners use harmful X-rays that can affect the baby.

  Fact: The primary body scanners in use today (AIT) utilize millimeter wave technology, which is a form of non-ionizing radio waves, not X-rays. Walk-through metal detectors use electromagnetic fields. Neither technology uses X-rays in a way that poses a risk to pregnant individuals or their fetuses. While older backscatter X-ray scanners did exist, they emitted extremely low doses of X-rays, comparable to a few minutes of background radiation, and are largely phased out.

• Myth: The radiation from scanners accumulates in the body and can cause long-term harm.

  Fact: Non-ionizing radiation, like millimeter waves and electromagnetic fields, does not accumulate in the body in a harmful way. Unlike ionizing radiation which can cause cellular damage, non-ionizing radiation at these low levels simply passes through or reflects off the body without causing molecular changes. The exposure is brief and dissipates immediately.

• Myth: Airport scanners can cause miscarriage or birth defects.

  Fact: There is no scientific evidence from extensive research and monitoring to suggest any link between exposure to airport security scanners and adverse pregnancy outcomes, including miscarriage, birth defects, or developmental issues. Medical and scientific organizations worldwide consistently affirm the safety of these devices for all passengers, including pregnant women.

Focusing on the scientifically supported facts can provide reassurance. The design and operation of airport security equipment are rigorously tested and regulated to ensure public safety, with particular attention to vulnerable populations.

Effective Communication with Security Officers

A smooth security screening experience often comes down to clear and respectful communication. Knowing how to interact with security officers can ease any anxiety you might have.

When you approach the security checkpoint, you can proactively inform a TSA officer that you are pregnant. You do not need to provide extensive details, but a simple statement like, “I am pregnant and would prefer a pat-down instead of the body scanner,” is sufficient. This allows them to guide you through the appropriate alternative screening process.

Remember that TSA officers are there to ensure security, but also to facilitate travel. They are trained to handle various situations and accommodate specific needs. Maintaining a calm and polite demeanor helps ensure a cooperative interaction. If you have a doctor’s note, you can offer it, but it is not typically required for opting out of a scanner.

Advocating for your comfort and preferences is important, especially during pregnancy. Do not feel pressured to go through a screening method you are uncomfortable with, as long as you are willing to undergo the approved alternative screening procedure.