People are usually surprised when I tell them that I have never had a prenatal ultrasound despite having 3 children. Ultrasound is a standard medical procedure that most pregnant women undergo at least once during pregnancy if not 2 times or more. Even birthing centers that specialize in low risk pregnancies such as where I received my prenatal care, recommend at least a single ultrasound.
It is never a good idea to submit to any medical test without first understanding exactly what you are getting yourself into.   Just because nearly every single pregnant woman gets an ultrasound or that most medical practicioners say that they are safe doesn’t mean that you should have one or that they really are safe.
Like many things in life, “safe” is certainly a matter of interpretation!
Make sure you have all the facts in hand before you judge whether or not the standard use of prenatal ultrasound is, in fact, truly safe for the precious life you are carrying inside you!
The experience that first got me very suspicious of ultrasound occurred when I was pregnant with my first child. Â I remember that the baby jumped and seemed extremely disturbed every time I had a prenatal visit and the midwife used a doppler to check the heartbeat.
Why is my baby so upset by this doppler, I thought?   Intuitively, it seemed that something was just not right about the overly casual use of this device.
Why didn’t the midwife just use a fetascope instead, I wondered?
I went home after one of those prenatal visits determined to find out the truth.  I started researching and was shocked to find out that dopplers are a form of ultrasound!  I also discovered that ultrasounds in general are not the innocuous test that prenatal caregivers would lead you to believe.
Ultrasounds Have Never Been Proven Safe
The American Medical Association warns against unnecessary exposure to ultrasound.   A number of studies have indicated probable danger with this routine prenatal test.  One of the most concerning for me was a study reported in the journal Epidemiology in 2001 that showed that the chance of subtle brain damage increases dramatically in male babies whose mothers get prenatal ultrasounds.
Doctors have long known that left handedness in a child that is not genetically determined can be an indicator of brain damage.  When the rate of left handedness in children rises above 9% for right handed parents and 35% for left handed parents, scientists know that some form of negative impact on neural development has occurred.
In this study, the rate of left handedness for boys increased by 30% above historical genetic rates when a mother was exposed to prenatal ultrasound.  The incidence of left handedness was especially pronounced for mothers who had received more than one prenatal scan.
Left handedness has been increasing in recent decades and this puzzling rise beyond normal and historical genetic rates could very well be related to the common use of prenatal ultrasound.  The fetus’ brain undergoes critical brain development even very late in pregnancy (preterm babies are 5 times more likely to be left handed).   Moreoever, the brain of a male fetus develops at a slower rate than that of a female leaving boys at particular risk for ultrasonic injury.
The Ultrasound/Speech Delay Link
Another study that gave me pause and eventually persuaded me to opt out of all forms of ultrasound – even use of the doppler, was a study in 1993 and reported in the Canadian Medical Association Journal.  This study examined 72 children ages 2-8 who were suffering from speech delay of unknown cause.    These speech delay children were twice as likely as a control group to have been exposed to ultrasound in the womb.
Delayed speech is a likely indicator of sub-optimal conditions for development during gestation and ultrasound exposure seems to be linked to these less than ideal conditions for the fetus.
How Would Ultrasound Delay Speech?
Ultrasound as a potential reason for the increase in pediatric speech problems in recent years has a very likely cause.  This cause would be the incredible loudness that is produced in the womb as the ultrasound waves bounce around the uterus.
How loud, you may ask?
How about louder than your power mower, a motorcycle 25 feet away from you or a jet flyover at only 1000 feet?  How about LOUDER than the last rock concert you attended where your ears were ringing for a day or two afterward?
Yes, THAT loud!
Can you imagine the intense fright and the spike in stress hormones the baby experiences from an ultrasound not to mention the likelihood of damage to the little developing ears from 100-120 decibel ultrasound waves?
Oh, and by the way, hearing loss begins with exposure to sound at only 90-95 decibels, much LOWER than the sound the baby would hear from a routine ultrasound or a doppler heartbeat check.
Beware Continuous Electronic Fetal Monitoring During Labor
A favorite way for a hospital to monitor how baby is handling the stress of Mom’s labor is by strapping an electronic fetal monitor to her belly.   Be aware that this device is ultrasound and when it is strapped to your body, your poor child is not only enduring the stress of the birth process itself but also dealing with 100-120 decibel continuous, blaring sound at the same time!
I have no doubt that someday a study will finally be done that shows that babies that are subjected to the barbaric insult of electronic fetal monitoring during birth have more speech delay and brain damage induced left handedness than any control groups.
Just say no to electronic fetal monitoring and if your hospital or OB tries to talk you into the so called “benefits” of this practice, then find another OB!  Better yet, have your baby with a midwife at home or in a birthing center where such devices are never allowed through the front door.
More Reasons to Skip the Ultrasound
One of the best articles I’ve read on the dangers of ultrasound was written by Dr. Sarah Buckley MD in 2009.   In this article, Dr. Buckley gives a thorough rundown of the potential biological risks to the fetus from prenatal ultrasound as well as the studies that give pause for even considering such a procedure during pregnancy.
This article by Dr. Buckley is loaded with information.  If you are questioning the safety of ultrasound, I highly recommend that you dive in and read it thoroughly.  This blog only discusses the reasons why I personally chose to opt out of prenatal scans and use of the doppler.  There is much more to be told with regard to this story and more serious problems associated with ultrasounds such as a potential link with autism.
What Will Be Your Choice?
As mentioned above, after considering the biological dangers to my unborn children, I opted out of all prenatal ultrasound scans.  I also stopped allowing the use of a doppler during prenatal visits and asked the midwife to use a fetascope instead.   There is a drawback to using only the fetascope – you can’t hear the baby’s heartbeat until Mom is about 22 weeks gestation.
The inconvenience of waiting to hear the heartbeat so much later in the pregnancy seemed an easy trade-off for the peace of mind!
Note: I did allow the very brief use of a doppler during labor as use of a fetascope during the natural birth process does not work well when Mom is moving around a lot or is in and out of a laboring tub.
Even when I was 38 weeks pregnant with my third child and the midwife really wanted to do an ultrasound because it appeared my baby had stopped growing, I refused.   I knew intuitively that the baby was just fine despite my advanced maternal age.
Guess what?  I was right, the baby was indeed fine and was simply 2 inches shorter in length than my previous pregnancies which accounted for my much smaller belly measurements during the third trimester.   To this day, I have never regretted not getting any ultrasounds and am very grateful that I trusted my instincts early to question what was happening with the doppler exams.  I believe skipping the ultrasounds is a big reason why my children all were articulating complete sentences very clearly at a very early age.  Of course, nutrient dense diet played a huge role too!!   But, what good is diet if you undo it with damaging medical tests?
What were your reasons for or against getting prenatal ultrasound scans?
Update:  Medical critic and researcher Jim West has recently published a book detailing 50 in utero CAUSAL human studies from China that prove irrefutably the high risk of prenatal ultrasound even at low frequencies.  This article on ultrasound dangers contains more information on this research that Mothers must be made aware of in prenatal examination rooms.
Sarah, The Healthy Home Economist
So my husband brought up a really good point; I read your article the day it was published but I didn’t really think much at the time. But now after discussing it, I think maybe you are missing a very important aspect in this post…what frequency are the ultra-sonic waves being sent out at? Did I miss that info? If you think of what ultra and sonic mean, this implies the same idea as UHF tv stations. It’s a super high frequency that humans CANNOT HEAR well, if at all. If you understand the way we hear sounds as a vibration, you understand that the higher the frequency, the smaller the wave that vibrates on our ear drum. So yes, 120 decibels is a lot, but if the frequency is super high, then it’s in essence passing though our ear drums undamaging. (At least to the hearing/ears) I’m not saying things like this are without risk, but throwing out only half the “scary” numbers isn’t very professional. I have my 20 week ultrasound comig up in 2 weeks and it’s my third baby. Neither of my children jumped or freaked out during ultrasounds any more than their usual activity. (Both my previous pregnancies were very active). I’m doing things like declining the diabetes sugar testing with that nasty sugar drink and eating as traditionally as I can with foods high in the right omegas and folates…despite my OB telling me that if I just took a regular prenatal I’d be “just fine” my children are both very healthy, have no signs of hearing issues (even after some testing with my son who apparently has “selective hearing” :-D) and are both highly intelligent.
Sarah,
Thank you for posting what every pregnant woman needs to hear… the truth!!! I had my three children before sonograms and doppler. Thank God! All of your points are valid, here’s some more food for thought… maybe there are more high risk pregnancies because of our technology. My daughter had only one sonogram between two births, no trouble… my daughter inlaw had multiple sonograms and doppler and had to have a c-section with both.
Keep the torch high, very few in the medical field will.
Sarah – you are a TRUE heroine to me to point this out against the perceived wisdom (and against the medical establishment). I’ve never had children, but I’m always wondered about this…..especially once I heard a teacher interviewed on English radio saying how the children seem different after they started systematically scanning – she could see the differences in her classes since this teacher had had a long career.
ALSO, I had to go through an MRI on my head once. Since then I can’t focus on a point – my eyes jump everywhere. At my next eye exam, the doctor said I had this condition – it was a Greek name, I forgot. Anyway….I CLEARLY could fix my gaze on something before that MRI.
You and your sceptism are a treasure – KEEP IT UP!
I just found this article and I am kind of shocked and numb. I was 34 when I was pregnant with my son, living in Germany. I had an ultrasound at EVERY dr. appointment. My baby hated it. He kicked the hell out of me during the exam, even at the mention of an appointment. Seriously! He is 3 now and still not really talking. His hearing has been tested and they said it was normal (whatever that means). He also has some behavioral issues that gave me real scare. I started researching autism… A diet change has helped in that regard, but I find it completely fascinating that there are connections to the ultrasound as well.
Sarah, I don’t know if you can attribute your children speaking early and well to the lack of ultrasounds. While I agree with most of what you wrote and years ago came to similar conclusions (haven’t had ultrasounds with the last seven children, and only very minimally with the first two), I haven’t seen early verbal skills or later speaking connected to diet or lack of ultrasounds. Two of our last three children started speaking later (not delayed by any means, but definitely not early or precocious like some others), and our diet was identical with all three (WAPF).
Hi Avivah, certainly diet is key as well as brain development would play a huge role. It seems so many children have delayed speech or speech impediments anymore even if they had excellent nutrition in the womb and were breastfed and were not vaccinated. Ultrasounds are a logical culprit.
I commented below during my pregnancy for my 3rd baby (2nd pregnancy), well at almost 3 months old he is very different from the twins. The homebirth was unsurprisingly far superior, peaceful and less invasive. Comparing the two pregnancies the first with numerous ultrasounds and a flu shot (regrettably), 0 vaccines for baby and WAPF diet to the last one with no ultrasounds, no vaccines, my infant is amazingly alert, babbling, smiling etc. The ultrasounds were the ONLY difference in my two pregnancies besides the flu shot- which I deeply regret. My twins are 2.5 years now and are still not even making 2-3 word sentences. They have wonderful receptive language and know even different complicated dinosaur words, colors shapes etc but are stuck on a dozen or so words and mostly mumble. I just wish I knew how to get justice for letting them do that and not providing me with complete informed consent! Doctors should do no harm, and clearly they harmed my beautiful precious twins, I will always feel guilty for not having woke up sooner.
I feel exactly the same , i had gestational diabetes and as a high risk pregnancy , i received an ultrasound every week , i asked about if it safe , and they always said that is safe and necessary. My son is now 3years old has developmental delays, he received therapies from early intervention program and i met other mothers with same problems and the common thing between all of us it was to have several ultrasounds during pregnancy. If i would know about ultrasounds before , i had never permit it. I am regreat about it every day in my life, because it affected what i love more.. my son. Why doctors in this country are allowing this? why?
This is being allowed because doctors are more concerned with malpractice suits than patient safety. Simple as that.
As a left-handed individual I find some of the information presented somewhat disturbing. As physicicist I find other aspects bewildering and highly unlikely. As a physician I find this misleading. Many of the comments appear well thought out, but it’s clear that there is a core readership that will believe what they want, and that’s ok inasmuch as it doesn’t lead to an adverse event. I challange you to show clear substantiated evidence of damage caused directly by ultrasound in prenatal visits. You may find that the risk of not having an ultrasound is greater than risk of injury directly from ultrasound. All in all, a thought provoking blog.
The same thing was said about xrays of women’s pelvises decades ago. “Show clear substantiated evidence” was the cry from doctors who insisted this procedure was beneficial to the birth process. Well, it took decades for the severe damage to children be ascertained. Of course they are no longer performed. I am SO GRATEFUL my mother used her common sense to say NO to pelvic xrays despite the doctors pushing her to do it anyway. She knew it wasn’t a wise decision and didn’t need a double blind study to tell her as much.
Similarly, I am not interested in waiting until that point for ultrasounds … my kids need a decision TODAY. There is plenty enough evidence already to cause serious worry about ultrasounds and the smart and forward thinking woman will skip them altogether. A truly wise person is able to make good, solid decisions without needing the absolute black and white truth to be smacking them in the face! Foolish people wait for double blind studies but guess what? It’s too late for their kids by then. DUMB MOVE.
Oh my goodness! Thank you so much for this information! I would have never even thought of this!
By the way, in the 1940’s and 50’s, they used to XRAY pregnant women until it was proven it caused birth defects.
I had read this during my 1st pregnancy. I felt powerless to resist all of the monitoring my OBs insisted on. I have mentioned this risk associated with ultrasounds to many people, including doctors. They all look at me as though I have 3 heads.