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Noah Gray

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Is Pre-mastication Dangerous for Baby? Let's Look at the Scientific Literature.

Posted: 03/29/2012 8:05 pm

Pre-mastication of baby's meal is nothing new to humanity. In fact, it is thought to have once been a critical complement to breast-feeding, providing a means to give infants large amounts of carbohydrates and proteins -- essentials that are often lacking in breast milk. However, the Internet has gone all aflutter over Alicia Silverstone's recent video in which she demonstrates this age-old baby-feeding strategy with her son, Bear Blu. While many negative reactions have simply been derived out of disgust, several publications, including The Huffington Post, have offered up brief statements of concern from health experts citing possibilities of disease transmission and other dangers resulting from pre-mastication.

The science exploring disease transmission through pre-mastication isn't exhaustive or complete, but there are recent studies of interest. Recently, efforts have gone into exploring pre-mastication as a possible risk in HIV transmission in Africa, with several documented cases seeming to occur after all alternative transmission routes were ruled out, with cases of transmission associated with blood contamination of the chewed food. Besides the above correlations to HIV, other studies have identified herpesvirus 8 and Epstein-Barr virus as being potentially transmitted orally from mother to child as well. But it is difficult to get a definitive answer and draw firm conclusions about the transmission dangers of pre-mastication, mostly because it is unethical to carry out well-controlled trials.

The problem with using these viral transmission correlations as a means to scare off any bold mothers considering pre-mastication is that most mothers will likely know if they are carriers of HIV or herpesvirus 8 long before they decide on a baby food type for their child. In fact, in a random sampling of blood bank units in the U.S., herpesvirus 8 was virtually non-existent in this country. And according to the National Center for Infectious Diseases, Epstein-Barr is one of the most common viruses in humans, with 90-95 percent of adults carrying it, as well as around half of 5 year-olds. Odds are, baby's getting Epstein-Barr sometime before she turns 30. A simple rule? If you're sick, don't spit in baby's mouth, and use common sense.

If you really want to be concerned about baby's health, wash your hands. Based on an extensive meta-analysis (a study in which data from hundreds of similar studies are pooled to increase statistical power,) exploring the role of hand hygiene on infectious disease transfer, Ms. Silverstone may be doing her child good by minimizing hand contact with the food! Effective hand washing reduced gastrointestinal illnesses by 31 percent and respiratory illnesses by 21 percent. And here's a fun factoid for all those advocates of antibacterial products: The study authors found no difference in disease prevention whether hand hygiene was accomplished using an antibacterial or a non-antibacterial soap.

Indeed, the experts criticizing Alicia Silverstone for her premastication practices as unsanitary do have a technical point, but because of the absence of extensive clinical studies, most of these facts are based on careful correlations documented in third-world countries with disease profiles that are much more dangerous than what we have here in the United States. Given the lack of concrete data, although precaution should be advised, we shouldn't let some experts use science as a veil to cover any potential personal disapproval and disgust towards pre-mastication, a practice to which we may owe our nutritional heritage.

 

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07:10 PM on 04/11/2012
that baby will have a fantastic immune system!
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LMPE
I connect the most dissimilar things
01:28 AM on 04/02/2012
I seem to recall a "Saturday Night Live" spoof commercial depicting a restaurant where they chew your food for you.
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HUFFPOST SUPER USER
see-ellen2001
01:29 PM on 04/01/2012
This obviously makes her feel better. Can't see how this benefits the child. But sometimes that is irrelevant.... I wonder if she has 'people' who masticate for her? Does she pre-masticate and store in jars for the nanny to use, like breast feeding moms do with milk? :)
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HUFFPOST BLOGGER
Noah Gray
04:56 PM on 04/03/2012
The benefits are the same as making your own baby food with a blender, as some here have pointed out. I still believe she does it because perhaps it makes her feel close to her son and it beats having to drag pre-made food (or a blender) when going out. The point is, it's a little silly to make people fearful of such a mundane practice.
10:10 AM on 04/01/2012
Oh My!
Guess what I thought the headline said...
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HUFFPOST SUPER USER
see-ellen2001
01:25 PM on 04/01/2012
Well, it is HOLLYWOOD their talking about!
03:26 PM on 04/12/2012
hmmm let me guess...would it have made a great Seinfeld episode?
noahmarder
Exposing the regressive lies, one by one
01:05 AM on 04/01/2012
If the baby didn't contract a disease from spending nine months in the mother's uterus, I doubt he will get one from contact with the mother's saliva. That being said, if the mother has any sores in her mouth, or has contracted a new disease since giving birth, pre-mastication is not a good idea.

Of course, this really should be a moot point, as blenders will accomplish the same objective, with NO risk of disease transmission.
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HUFFPOST BLOGGER
Noah Gray
04:57 PM on 04/03/2012
Agreed. Using common sense is all we need, not "experts" scaring people about practices that in most circumstances, are harmless.
03:48 PM on 03/31/2012
It is true that it's not at all uncommon for a mother to pre-chew some food for very young children. That's a common practice in many places around the world. Folks have been doing that for babies since before we evolved in homo sapiens.

But it's also true that Alicia Silverstone's kitchen has a blender, a food processor, and a mini-chopper. Any of which can make the food manageable for her child.
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newleaf
~ Turn over a new leaf ~
08:20 PM on 03/30/2012
Is she going to eat food her husband pre-chews for her?
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sabelmouse
i love to tumble , ask me why .
06:29 AM on 03/31/2012
what a silly comment ? it's about prechewing for a baby who can't yet do it himself. it's so sad when people don't understand such basic concepts. it shows how far we are removed from '' nature ''. do you think food grows in the fridge or supermarket too ?
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tracyamanda
Do people even read these?
10:31 AM on 03/31/2012
Ummm, that's what blenders are for.
KarasudaJay
My micro-bio is empty.
08:04 PM on 03/30/2012
Great article.
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SuzDuJour
As cute as I am funny...hey, wait a second
07:15 PM on 03/30/2012
Think of it as 'building antibodies'...
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mansterEZ
searching for secular humanist fact-based truth
03:09 PM on 03/30/2012
I've seen lots of mothers do this and I'm sure my mom did also because she was definitely old school. Of course I was also breast fed until my first tooth. In the age of super viruses, however, this practice is really outdated and dangerous although feeding one's child from a jar of processed baby food presents the same risks. It's best to grind and prepare a baby's protein, fruit and veggies much like a smoothie if one has the time and patience. Raising a healthy child is more than a full-time job.
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sabelmouse
i love to tumble , ask me why .
06:30 AM on 03/31/2012
in the age of super viruses ? what about kissing and cuddling ?
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mansterEZ
searching for secular humanist fact-based truth
04:03 PM on 03/31/2012
Sabelmouse,

Kissing and cuddling has more to do with maintaining good hygiene unless one has a propensity to engage in these practices with perfect strangers. Super viruses mutate really fast these dayz BECAUSE of overuse of antibiotics supplementing a healthy diet. A semi-engaged person would already know this.
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HUFFPOST BLOGGER
Noah Gray
05:04 PM on 04/03/2012
Thanks for your comments, but you're falling for the same tricks that this entire post was about. The point is that there are *no* studies demonstrating that "super-viruses" (whatever that means) are passed via pre-mastication. I cite article above that have demonstrated some small correlation with certain diseases like AIDS, but even then, blood needed to be transmitted simultaneously. And even then, these are just correlations because proper studies cannot ethically be completed. I am concerned about "engaged" individuals you swallow every science morsel a journalist looking for more hits to their story offers. Please pay attention to the language they use, something like this: "Reading this comment MAY cause your blood pressure to rise." Sensationalist comments like that may have an element truth, and certainly will drive traffic to a site, but without scientific backing, are simply conjecture.
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snowballinhell
Humans have a 100% chance of extinction
01:07 PM on 03/30/2012
'And here's a fun factoid for all those advocates of antibacterial products: The study authors found no difference in disease prevention whether hand hygiene was accomplished using an antibacterial or a non-antibacterial soap.'

Wow! This is exactly the kind of info we need because I can't help to wonder if the use of anti bacterial soaps - so much more prevalent these days - isn't doing as much harm as good by killing your 'normal' bacteria which might make you more vulnerable to the random really harmful bacteria. Soap and water for me, please.
03:30 PM on 04/12/2012
that was an interesting detail...all antibacterial types of soaps seem to do is dry my hands out terribly, causing me to add lotion, which of course attracts dirt and germs to the hands anyway... that said though, i will swear by a bottle of liquid Dial as i find little cuts, scrapes and rashes (over the years, people, i'm not some walking ick-ball) clear up amazingly fast after using it.
12:24 PM on 03/30/2012
I've pre-chewed some food a few times when my kids were babies. At the time, I figured that is how our ancestors did it. Frankly, I did not think much of it. Of course, I was not sick, nor were the babies.

I used a food processor to make my babies' food, but in a pinch, I figured it was better to pre-chew than leave the kid hungry. Seemed like a normal thing to do.
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snowballinhell
Humans have a 100% chance of extinction
12:49 PM on 03/30/2012
For a minute I thought your dog was talking about feeding her pups, but then realized - it's you ;-) Good for you!
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Lily P
Sofa King Awesome!
11:53 AM on 03/30/2012
WHY is this such a huge deal?
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mansterEZ
searching for secular humanist fact-based truth
03:11 PM on 03/30/2012
We are in the age of super viruses. Old practices just don't work well anymore.
KarasudaJay
My micro-bio is empty.
08:05 PM on 03/30/2012
There have been plagues and such throughout history, they're nothing new.
03:34 PM on 04/12/2012
there's no AGE of super viruses...tell me a time beyond Eden when there weren't some nasty if not deadly diseases or viruses threatening a facet of humanity!
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HUFFPOST SUPER USER
FilthyHarry
Expletive Deleted
11:18 AM on 03/30/2012
I don't know if pre-chewed food is good or bad, in fact you can make the argument that perhaps it passes on necessary microbes (or whatever) helpful in protecting an infant?

However the argument "they used to do it" is a terrible defense. We used to have a lifespan of 35 years too. Given the advent of utensils and blenders, the argument is silly on its own.
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traveling1
50 states, 7 continents, 55 countries and counting
02:23 PM on 03/30/2012
That's they way I feel about a lot of 'traditions' or we've-always-done-it-this-way arguments. Illogical.
mikiao
Empty my micro-bio is.
02:40 PM on 03/30/2012
I shall disagree with you because people have been disagreeing with other people since the dawn of man. :D
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Noah Gray
05:10 PM on 04/03/2012
Fair enough, but I wasn't really defending pre-mastication. I personally wouldn't do it and in fact have always made baby food with a blender for my children. My point is that I am deeply concerned by articles on health or science topics that throw around scary "This may cause DISEASE!!!!11!!!" statements without offering scientific evidence for that. I wrote this piece after doing less than an hour and a half of research using publicly available tools and offer above what I came up with. There is some repetition of the above, but not much more. I am not a big fan of overly-conservative fear-mongering under the guise of science. Again, in the face of the unknown, use common sense. The media communicators' default mode should not be "scare the public."
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DAE
10:57 AM on 03/30/2012
Primate mothers feed their offspring in this fashion. So its only natural that humans as Primates do the same. Saliva is a natural antiseptic. It contains large amounts of nitric oxide a powerful antimicrobial substance as well as ascorbate (Vitamin C) a cofactor in at least eight enzymatic reactions including several collagen synthesis reactions that are especially important in wound-healing. Nature has come up with prophylactic solutions to make pre-mastication a perfectly safe way of feeding the growing infant.
03:35 PM on 04/12/2012
well now DAE you're just making plain old sense...cut it out, you know people don't want to read that!