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David Katz, M.D.

David Katz, M.D.

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Food Dyes: Why People Want Them Despite Potential Health Risks

Posted: 04/ 9/11 11:23 AM ET

What, exactly, does familiarity breed? Apparently glow-in-the-dark food is one possibility.

That, in essence, is the message in a recent New York Times article by Gardiner Harris ("Colorless Food? We blanch." 4/2/11) summarizing research and perspectives on the topic of artificial colorings and food dyes.

Mr. Harris points out that in the absence of FD&C Yellow No. 6, Cheetos would display the pallor, and apparently the appeal, of insect larvae. Studies have shown that foods lacking the expected color are rated lower on taste, even though taste is actually unchanged!

Pickles are bright green courtesy of food dyes; they would otherwise be grey. Jell-O, we're told, would be tan.

All of this sounds unappealing, and research confirms that's just how people respond. But then again, cauliflower is pale and it's not a problem. Steel cut oats are both pale, and somewhat grey, and taste just fine. Wheat toast (or for that matter, any toast) is tan, and no one objects.

The issue, then, seems not to be preference for a given color -- but preference for the expected color. Green pickles are good, but not because green is good -- but because it's expected. Green eggs, with or without ham, are not so good -- or at least take some getting used to! We prefer the familiar color.

We all know, of course, what the idiom tells us: familiarity breeds contempt. If we reflect on some things (or people) we should cherish every day, but tend to take somewhat for granted, we may be inclined to agree. But even the wisest and most time-honored of aphorisms are not unfailingly true.

In fact, they can't be, because they are up against equally wise and time-honored aphorisms saying just the opposite! At times, "fools rush in where angels fear to tread," but at other times, "he who hesitates, is lost."

So, in fact, familiarity does not reliably breed contempt, and can at times breed the very opposite -- preference. This is clearly the case with regard to food.

Studies over an extended span indicate the powerful role of familiarity in food preference. Babies prefer the taste of foods to which they are first exposed through their mother's milk. Most of us grow up with fond memories of the foods that nourished us through childhood.

Cultural variation is a pretty clear indication of the role of familiarity as well. We can all think of 'exotic' foods we have seen in movies, or on some reality show, that make us squeamish -- but that are just another snack for those who eat them routinely. Inuit babies may eat whale; Mexican babies may eat habaneros. In fact, the preference for spicy food is about familiarity that extends from culture, to physiology. The particular nerve cells that register spiciness, called Substance P cells, habituate through exposure -- so the spicier your diet is, the spicier you can stand it, and tend to prefer it.

The persistent, if unresolved, notion that some components of diet -- sugar/sweet in particular, but possibly salt/salty, and maybe fat/creamy -- can be addictive is a clear indication of the power of the familiar. You cannot be addicted to something you have never experienced. And even the most irrefutably addictive of substances -- tobacco, cocaine -- takes repetitive use before it owns you. The more you get, the more you need.

Regardless of how sugar, salt, and fat ultimately compare to decisively addictive substances, they clearly share the "more you get, the more you want" experience with them. Research in both people and animals shows that exposure to high levels of sugar, salt and fat propagate preference. The converse is true as well; when groups habituate to lower-fat, salt, or sugar foods, they can actually develop aversion to the high-fat, salt, sugar foods they once preferred.

And so, while high sugar and salt content can be blamed on the prevailing palate, the question arises: what made that palate prevail in the first place? In essence, supply and demand have created a kind of arms war, with the obvious loser being the public health.

A tendency to like sugar and salt results in more sugar and salt in processed foods. These higher levels become familiar, and thus cultivate a preference for higher levels still. The food industry accommodates, and the dangerous game is afoot.

Much the same, it seems, is true of food dyes -- which the FDA recently decided do not clearly contribute to behavioral disorders in children. But let's recall that absence of definitive evidence is not evidence of absence, and the authorities are recommending more study of a possible link.

We know from both research and personal experience that taste buds are malleable little fellas; they tend to learn to love the food they're with. Eyeballs seem to share the tendency. Have you ever met someone, gotten to know them, liked them more and more, and then realized they seemed far more attractive to you than when you first laid eyes on them? I think we come to see the beauty that is more than skin deep. It works with people -- why not pickles?

While there is a word for disliking what (or whom) we don't know -- xenophobia -- there is, to my knowledge, no such word for liking what we don't know, because it doesn't happen! Familiarity's offspring may well include contempt, or at least complacency -- but they decisively also include affinity, and preference.

So don't let the foods that could be friendliest to your health and vitality remain strangers to your diet. All that stands between you and them may be want of ... familiarity.

-fin

Dr. David L. Katz; www.davidkatzmd.com
www.turnthetidefoundation.org

 

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What, exactly, does familiarity breed? Apparently glow-in-the-dark food is one possibility. That, in essence, is the message in a recent New York Times article by Gardiner Harris ("Colorless Food? We...
What, exactly, does familiarity breed? Apparently glow-in-the-dark food is one possibility. That, in essence, is the message in a recent New York Times article by Gardiner Harris ("Colorless Food? We...
 
 
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HUFFPOST SUPER USER
onionboy
Blessed are the Cheese Makers
07:17 PM on 04/11/2011
Seriously? There's confusion. Pale or gray or tan or black...don't look appetizing. Remove artificial colors for a moment. When you see broccoli or a tomato or a steak...do want it to look pale and gray? No. You want bright green, bright red. I'm sure it's wired into us from long ago, evolution making sure we didn't eat too much under-ripe or over-ripe or rotten food.

Unfortunately, food manufacturers have figured out a way to capitalize on this innate psychology to make us buy more of their products. For instance, why do cake mixes ask you to add an egg? Do you honestly think they can't dehydrate an egg like they dehydrated everything else? No. Betty Crocker hired two psychologists who worked in advertising, who told BC to require a fresh egg or two, and Betty Crocker crushed the competition...until everyone started doing it.
06:34 PM on 04/11/2011
When Kraft conducted market research in UK, it found Brits worried more about food dyes than Americans. (Americans worry more about calories, fat and salt content.) So, based on its research, Kraft replaced artificial coloring with natural coloring in its food products for Great Britain.
Preliminary evidence suggests that many children have a sensitivity to food dyes—and a smaller percentage are very sensitive.
“We see reactions in sensitive individuals that include core ADHD symptoms, like difficulty sitting in a chair and interrupting conversations,” says Columbia University psychiatrist David Schab, M.D., co-author of a 2004 analysis that found food dyes promote hyperactive behavior in already hyperactive children.
Reviewing 30 years of scientific studies involving food dye and behavior, Dr. Schab concluded, that the dyes likely cause neurobehavioral toxicity. "The science shows that kids' behavior improves when these artificial colorings are removed from their diets and worsens when they're added to the their diets," Schab said
06:28 PM on 04/11/2011
A European Union-wide health warning must now be put on any food or drink that still contains the colors that are thought to cause hyperactivity in some children. This is following a University of Southampton Study which suggested a possible link between consumption of six food colors and hyperactivity in children. The colours are Tartrazine (E102), Quinoline Yellow (E104), Sunset Yellow (E110), Carmoisine (E122), Ponceau 4R (E124) and Allura Red (E129).
02:27 PM on 04/11/2011
My young kids and I enjoy buying peppers from the store because they come in such a variety of bright colors. My daughter was attracted to them from an early age and now she It's raw bell peppers for a snack. One of the healthiest vegetables you can eat raw.

Something to take away from this is that the health food peddlers need to make their food brighter and prettier. It's much easier than forcing everyone to eat grey sloop.
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HUFFPOST SUPER USER
Beth Alexander
11:19 PM on 04/10/2011
I have never thought that bright blue or orange (or any neon color not from nature) food looked good. I can only guess that maybe it's because growing up i didn't drink Mountain Dew for dinner, or eat Cheetos as a snack at home. These things were shoved at me by the media but considered "treats" by my family so I never felt they were the norm. And now I think they are gross. Just an example of how I think setting a good example of health for children is soooo important. People my age that still indulge on this neon crap usually share that they enjoyed it as kids. Hmmm...
02:32 AM on 04/10/2011
I think more people would turn away from bright and artificially colored foods if they realized that the synthetic dyes are made with petroleum.
OverseasVet
Stationed not deployed
04:48 AM on 04/10/2011
You think people who eat the likes of Fruit Loops cares about what makes those rings of sugar so brightly colored? I have a whole wheat bridge for sale!
11:17 PM on 04/09/2011
Some of the reason for this is what we are brought up to believe. When I was a child being thin was looked at as being unhealthy as with my Portuguese upbringing I was led to believe being plump was ok. If we are taught that pickles are green then that is what we know. Why do most of the sugary children's cereals have the colors of the rainbow in it, cause they know kids will want it.

http://exerciseandnutritiontips.com
07:04 PM on 04/09/2011
In the Middle ages, fancy "French" sauces were developed to hide the fact even the rich were eating rotten food.
Today, dyes(and fat/salt/sugar) are used to hide the fact that a lot of our food has the flavor and nutrition of cardboard.
If they won't eliminate dyes, could some at least switch to natural dyes and use less? I would buy it.
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HUFFPOST SUPER USER
cwebster
predominantly exasperated
06:26 PM on 04/09/2011
I find this hard to believe :
"Pickles are bright green courtesy of food dyes; they would otherwise be grey"

My mom put up quarts of dill pickles every year. They weren't a bright green, but they were very definitely green...and no dye.
02:20 PM on 04/11/2011
It's ok I got hung up on the pickle thing to...
HUFFPOST SUPER USER
KEATSnSKYESMOM
My life is way too complicated to put in this tiny
05:55 PM on 04/09/2011
I remember when my son was 9 months old and my mother was feeding him his soy yogurt she responded with disdain at the color (it was strawberry I think). 'Why is this gray it looks so unappealing, how can he eat this?" I told her that he doesn't care he is a baby and I would much rather know my son is eating something natural and not fake that cause cancer and anxiety.

The first time my son had food coloring was when he was put on antibiotics. Worst experience EVER! He was up for a week - little did we know at the time that he was also Autistic. Now we spend the extra time and money to make sure his antibiotics are dye free . . . that is always an ordeal!

Hopefully people will eventually realize that our lives would be so much better without fake food coloring and fake smells (like Febreze). I just had to throw that in there because well I don't much like that stuff either . . . don't get me started on the chemicals everywhere!
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HUFFPOST SUPER USER
Raven Waters
10:08 PM on 04/09/2011
If I were you I read up on soy and endocrine disruptors and if it's not organic it is gmo soy
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VoiceofV
There's no certainty – only opportunity
05:50 PM on 04/09/2011
What's the real reason we still have deadly dyes in our food?

Natural food colorings work just fine, and are even healthful, including extracts from blueberries, beets, turmeric, etc.

Petro-chemical food dyes are carcinogenic at best, but make lots of money for the petro-chemical corporations.

There you go . . .
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HUFFPOST SUPER USER
cwebster
predominantly exasperated
06:27 PM on 04/09/2011
...and I'm sure petro-chemical corporations have very powerful lobbyists...
HUFFPOST SUPER USER
Robert Huber
06:49 PM on 04/09/2011
Petrochemical companies make lots of money on fuel, solvents, and plastics. Food coloring is not something that such companies make a lot of money on.
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Hesca419
Ha HA! Microbio.
12:24 AM on 04/10/2011
Come now! This is capitalism! If somebody isn't making money off of it, they aren't doing it!
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HUFFPOST COMMUNITY MODERATOR
peegan
Obama 2012
04:46 PM on 04/09/2011
If expectation were the main answer, why would anyone expect their grain based cereal to be colored like a rainbow? Why did consumers respond to brightly colored processed foods when they first started becoming available? We are predisposed to be attracted to brightly colored foods, the bright red of an apple, the sunset color of a cantaloupe, the yellow of a banana, the green of  fresh spinach. These colors used to mean that an item was good to eat, good for you. Now it probably means you should leave it on the shelf.
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HUFFPOST SUPER USER
drvittoriarepetto
04:01 PM on 04/09/2011
As to the tendency to like sugar and salt results in more sugar and salt in processed foods, I believe that artifical sweetners increase our desire for sweet more than regular sugar.
Advise someone who drinks diet soda to eat fruit as a snack instead of cake or change their sugar laden processed cereal for an organic whole grain cereal and you will hear “but it not sweet enough!” These people have trained their taste buds and their brains to want more and more sweets
http://drvittoriarepetto.wordpress.com/2010/01/05/comment-artificial-sweeteners-3-reasons-to-rethink-that-diet-coke/
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HUFFPOST BLOGGER
David Katz, M.D.
Director, Yale Prevention Research Center; Editor-
04:40 PM on 04/09/2011
I fully share this concern about artificial sweeteners.
02:00 AM on 04/10/2011
Cool. I've been signing that tune for awhile now. My friends are sick of hearing me rant about the dangers of artificial sweeteners. I found sucralose in whole wheat english muffins the other day!!!! We need to expose this effect to the public despite billion dollar marking campaigns for diet beverages. Who are they making less obese? Not the american populace. The evidence is all there that they lead to weight gain. The widespread acceptance of no/low calorie sweeteners is on the rise. It needs to be stopped.
02:56 AM on 04/10/2011
Dr. Vittoria Repetto... hmm, maybe I should check her blog link for her "doctor" credentials.

"I have been a Doctor of Chiropractic & an Applied Kinesiologist since 1987."

Whaddya know, another fake doctor posing as a health expert on HuffPo's comments section.
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HUFFPOST SUPER USER
drvittoriarepetto
03:54 PM on 04/09/2011
The author writes:the preference for spicy food is about familiarity that extends from culture, to physiology. The particular nerve cells that register spiciness, called Substance P cells, habituate through exposure -- so the spicier your diet is, the spicier you can stand it, and tend to prefer it.

In my case, my family's diet was not spicy at all. I as a teenager found that I liked some spiciness and continued eating more and more spicey foods.

Looking forward to tonight's veggie curry w/ lots of thai chiles w/ the seeds left in
03:51 PM on 04/09/2011
As the mother of a child who has severe reactions to dyes this "Debate" frustrating.

The expectations of consumers card has been over played. MARKETING and ADVERTISING are the problems NOT expectations. New foods, or packaging(THINK YOGURT IN A TUBE) were never expected. Marketed well but not expected.

The companies haved "trained" consumers to expect neon colors.

The author stating pickles would be grey we are told, does NOTHING refute that they are not grey. Thirty three years and six US states and I have NEVER seen a home canned grey pickle.
The consumers need clearer explanations to help them understand. I feel the author's article helps no one understand and "explains" even less. But his word count is always good when he ties in other articles like appearance vs. getting to know people.

The colors hurt more than they help. They are not necessary.

I write often that clear isn't always clear sometimes it is Blue #1.