Health risks of prenatal ultrasound - the urgent need for more research and regulation
  • Petitioning State, Federal regulatory agencies and consumers

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State, Federal regulatory agencies and consumers

Health risks of prenatal ultrasound - the urgent need for more research and regulation

    1. David Blake
    2. Petition by

      David Blake

      Pembroke, NC

Ultrasound is used routinely for imaging in pregnancy worldwide.  But, is it safe to expose a fetus to ultrasonic waves?  Researchers have published a number of studies that show ultrasound having concerning effects on animal development; however, understanding how ultrasound affects human health requires further scientific research.  In light of this, we MUST address 3 important safety shortcomings in the practice of fetal sonography to reduce the risk of harming our future children with excessive ultrasonic exposure:

1. Sonographers need to record more information about their scan sessions for epidemiologists to study.  2. A large number of defective ultrasound units are in clinical circulation, suggesting greater need for more frequent equipment maintenance.  3. Vanity prenatal ultrasounds are blatantly non-medically indicated use and are negligent of a baby's health - these should be strictly regulated or outright stopped until further research is performed.  Addressing these 3 issues will help medical research progress, create technical jobs in healthcare, and protect the wellbeing of future children worldwide for generations to come.

Please share this petition!

For more information, this page has links to a number of scientific papers.  Or you can watch the YouTube series to be walked through some relevant scientific literature: Is Prenatal Sonography Safe?  YouTube playlist

Join us on Facebook for questions or comments!


(1) More detailed medical records of sonogram sessions are needed for reliable epidemiology.  Sonographers do not keep detailed records about ultrasound scans, and so researchers cannot make conclusive dose-response assessments about how ultrasound affects human health.  This obstacle prevents us from knowing if ultrasound really is safe or not for humans to use during pregnancy.  [Consider the concerns raised at the websites of: Dr. David Toms, Dr. Manuel Casanova, Ultrasound-autism.orgAlliance for Improvement of Maternity Services (AIMS)]

(2) Ultrasound equipment for prenatal Ob-Gyn use should be required to have more frequent routine maintenance by law.  Simply using ultrasound devices detunes them similarly to musical instruments, and defective equipment lowers the machine's image quality.  A unit not being properly calibrated can lead to more ultrasound exposure needed in order to make a diagnosis.  Enforcing more frequent maintenance of ultrasound units would not only be prudent for safety, it would also promote engineering and tech jobs which could help the ailing economy. [Relevant citations: High incidence of defective equipment in circulation, Annual calibration is not sufficient]

(3) Vanity ultrasounds clinics encourage non-medical fetal ultrasound exposure and must be regulated, or even outright stopped (for now).  Vanity clinics promote the most risky practices of fetal sonography: long, high definition movies; frequent exposures; lack of technical and/or medical background; improper equipment maintenance.  Ultrasound for fetal use should be only performed by professionals trained in proper safety precautions and up-to-date with current research.  [Relevant citations: Proliferation of Prenatal SonographyPrenatal ultrasound alters normal mouse brain developmentLow-intensity ultrasound energy applied to rat testes alters testosterone levelsUltrasound increases cell divisionUltrasound sensitizes hearing of infantsPrenatal ultrasound alters sociability in mice possibly akin to autism, Prenatal ultrasound negatively affects mouse cognition]

** Please read the testimonials of scientists, practitioners, professionals, and parents whom have signed this petition and left comments:

Dr. Manuel Casanova, MDNeuropathologist, autism researcher, founding member of the John Hopkins and National Institute of Mental Health pathological brain bank units, and now Gottfried and Gisela Kolb Endowed Chair in Outpatient Psychiatry and Professor of Anatomical Sciences and Neurobiology.  The University of Louisville, Kentucky

“Ultrasound was deregulated and energy levels were increased without proper safety studies being performed. There is evidence that besides thermal and cavitation effects ultrasound may provide for redox and membrane permeability changes. A significant number of ultrasound transducers in clinical practice are defective and end users seem unknowledgeable about the safety margins of their equipment. Ultrasound is now being used far beyond the safety recommendations of imaging boards for non-risk cases. There should be more studies on this matter and the technique should be regulated to enforce safety concerns.” 


Dr. Diana Mason, RN, PhD, FAANRudin professor, emeritus of the American Journal of Nursing, and now Co-Director of the Hunter College Center for Health, Media, and Policy,  New York, New York.

”I'm concerned about the rise in autism, including with my extended family. First Do No Harm should be the mantra that we all adopt. I'm concerned about the proliferation of the perspective that fetal ultrasound is like a regular photo, when it's not. We must change public perceptions about the potential dangers of fetal ultrasound and call for more research immediately.”


Dr. John Chiles, MDRadiologist.  Raleigh, North Carolina

“As a radiologist I have been concerned about over utilization of imaging procedures and ultrasound in pregnancy is a prime example. A way of controlling this would be for insurance companies to pay for the equivalent of one ultrasound per pregnancy but the obstetrician could perform as many as he or she felt were necessary. Another way would be to increase the price for obstetric care which would include all the in-office ultrasounds.”


Dr. Reginold Moore, MDFamily medicine.  Hickory, North Carolina

“If there is any possibility that prenatal ultrasound can be linked to the increasing problem with Autism Spectrum Disorders it should be researched further and practitioners using Ultrasound should be cautioned to consider the risks and benefits before performing. There may be a greater risk during the fetal developmental period (1st trimester) after which ultrasound is significantly safer and beneficial. Medicine needs these answers.”


Dr. William Brandon, PhDPhysicist.  Pembroke, North Carolina

“We should always be suspect of "lucrative" medical procedures - particularly when supported through insurance policies. Consider this - all biological tissue in the region of ultrasound exposure vibrates at the frequency of the ultrasound wave, leading to a myriad of complex and potentially harmful side effects.”


Parrish Hirasaki, MSME - Engineer with experience in industrial heat and systems management, and web manager of, Dickinson, Texas

“I am an engineer who is certain that overexposure during ultrasound is causing brain damage. It does in rats - why not humans?”


Nancy Evans, BS - Health science consultant.  San Francisco, California

“Ultrasound exposes the brain of the developing fetus to heat, vibration, and high intensity sound. Prenatal ultrasound is being performed in unregulated non-medical settings (shopping mall boutiques selling "keepsake" sonograms). It is not a risk-free procedure and women need to know that.”


Cindy Sage, MASAGE Design. Santa Barbara, California

“One thing that should be halted is the now-routine use of ultrasound twice within two weeks to check for signs the fetus may have Downs syndrome. The neck is scanned twice... in two weeks... to gauge the neck thickness. Can you imagine the exposure to such a small area of the brainstem - it is entirely avoidable since there is a new and reliable blood test. Stop ultrasounds for this procedure.”


Laura Blumenstiel - Mother

"I have two children, and although my pregnancies were both high risk for various reasons (generally my health during pregnancy), I feel that the number of ultrasounds scheduled was excessive.  I probably had close to 10 in my first pregnancy, and had at least two per week for the last two months of my second pregnancy.  Scare tactics were used by my doctor any time I questioned the need for so many, including the claim that he needed to be "prepared" in case my babies were born with conditions that required immediate treatment.  They were not.  I genuinely believe that some OB's see high risk pregnancies as a cash cow.  Certainly mine did."



"Obstetric practices in NZ follow close on the heels of those in larger countries like the USA. Most women in NZ now have at least 4 ultrasound scans during their pregnancy with at least 2 of these being performed in the first trimester. In NZ most women access fully subsidized pregnancy/maternity care and those who pay privately for obstetric care still have their (usually much greater number of) scans publicly subsidized. The continuing increase in ultrasound scanning is greatly increasing the cost of maternity care to the NZ taxpayer with no commensurate improvement in outcomes. Like the rest of the developed world, where ultrasound is readily available, we are seeing an increase in autistic spectrum disorders and also things like tongue and lip tie. More regulation, research and consumer education is urgently needed. We hope the USA will lead the charge to ensure the safety of this overused technology."


Michelle Hughes - PFLUGERVILLE, TX

"As a CNM, I frequently have patients upset or disappointed that we don't do frequent US. I try to explain that US has proven effects on fetus, but it makes little impression on them, since no one has ever heard of this. I agree more research is needed, as well as mainstream education."

Recent signatures


    1. Is Prenatal Sonography Safe? Ep. 3: Sonographer Education

      David Blake
      Petition Organizer

      Did you know that a 2006 survey exposed that only 3.8% of USA sonographers were able to correctly explain the safety readout on an ultrasound machine?

      Watch this video to learn what to look for and to see if your practitioner does, too.

    2. New YouTube video: "Is Prenatal Sonography Safe? Ep. 1: Epidemiology"

      David Blake
      Petition Organizer

      Hello, everyone!

      So, I put a little bit of love into making a YouTube video. If yourself or anyone you know would like to know about risks associated with fetal sonography this video should give a good introduction.

      I'm planning on making this a multi-part series. The next episode will discuss equipment and education flaws. Did you know that 40% of ultrasound transducers in circulation right now are defective? Also, that many sonographers have only the most vague understanding of how to read the safety information on an ultrasound machine? (This is according to multiple studies, not just opinion)

      Check it out and share the video!

      Is Prenatal Sonography Safe? Ep. 1: Epidemiology

      Hello! If you are curious about the safety of prenatal ultrasonography then this video is for you. -Want to help research or stay in touch for updates/more information?- * Like our Facebook page at: * Sign a petition at: * Take a survey about health outcomes after ultrasound at: If you don't like the audio quality in this video, then help me get a new microphone!

    3. Reached 750 signatures
    4. Today was this petition's largest growth yet, let's keep it going

      David Blake
      Petition Organizer

      We received over 400 signatures today, more than tripling what we had yesterday -- and the day is not yet done. I am thrilled that word has spread like this, and I encourage everyone to please help keep the momentum going by word of mouth.

      The best way to fight against widespread misinformation is with facts and education.. I plan on releasing a video presentation on this subject within the week - stay tuned for our YouTube debut. I think it's about that time.

    5. Reached 500 signatures
    6. Wordpress blog open, discussion and comments welcome

      David Blake
      Petition Organizer Follow this blog and feel free to discuss any of the materials there. I am happy to answer any questions.

    7. A work in progress -

      David Blake
      Petition Organizer

      Rome was not built in a day.

      This webpage will serve as an all-inclusive information station for this topic. Expect it to continue changing as time goes on for the better.

      If at any time there are concerns over the content, please leave comments or contact me and we will sort things out. I respect every name on this petition and appreciate your support.

      Take care,

    8. Reached 100 signatures
    9. We are nearing 100 signatures -

      David Blake
      Petition Organizer

      Thank you, everyone, for your support and comments. Some revisions have been made to the body of the petition to make it more clear. If anyone has any further comments or questions please feel free to post them.

      Everything is still a work in progress.

      Please continue to share and discuss this petition with people. Skepticism is always welcome -- I intend for this petition to promote transparency.

      Take care,

    10. Reached 50 signatures
    11. Please tweet, share on FB, and talk about this petition

      David Blake
      Petition Organizer

      Very thankful to our first group of supporters for signing this petition! In the long run I would really like this message to reach a large group of people (500 is our 'initial goal', but add a few zeroes onto that in the stretch). To get there we need more coverage and publicity.

      Please share and spread this petition. It is good stuff, and promotes healthy skepticism. Also, feel free to discuss in the comments section anything related to this topic. If anyone has questions feel free to post them there as well.

      Take care,

    12. Reached 25 signatures


    Reasons for signing

    • Natalia O SAN JUAN
      • 3 days ago

      Health risks associated with ultrasound need more research and regulation.

    • Joanne Elman INDIAN TRAIL, NC
      • about 1 month ago

      I have just become aware of the frequent and casual use of ultra sound. Drs re ordering them for little reason and depend on them too much to cover themselves.

    • Angela Larson LUFKIN, TX
      • about 1 month ago

      I want mothers and babies to get the best and safest care possible without the competing interests of profit or liability reduction undermining optimum care. More research is needed in this area.

    • H Gallagher DUBLIN, IRELAND
      • 2 months ago

      As a developmental psychologist, I am very concerned that the rise in ASD diagnoses coincides in time with exposure to much more frequent and powerful prenatal ultrasound scans, as well as to other radio waves in the form of increasingly powerful mobile phone technology.

    • Brandon Farlin SARASOTA, FL
      • 3 months ago

      We should understand the spectrum of ultrasonic effects before we freely expose our future children to it.


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