The Sprinkles Diet: Is Taste the Key to Weight Loss?

by Mike Howard

If healthy food tasted good, perhaps we wouldn't be facing an obesity crisis. Well new research is proposing that using calorie-free sweeteners and seasonings can help people lose significant weight by keeping them fuller and decreasing their consumption.

db sprinkles.jpg

The so-named "tastants" - substances that stimulate the sense of taste, were shown to have a profound impact on the weight of participants. Here are the details of the study - conducted by Alan Hirsch, MD, founder and neurologic director of the Smell & Taste Treatment and Research Foundation in Chicago.

On a side note: I can't believe there is a such organization as the "Smell & Taste Treatment and Research Foundation". Equally unbelievable, is that they have a neurological director!

Anyway, back to the study details...

  • 2,436 overweight or obese individuals sprinkled a variety of savory or sweet crystals on their food before eating their meals during the 6-month study period.
  • Subjects put liberal applications of the salt-free savory flavors on salty foods and applied the sugar-free sweet crystals on sweet or neutral-tasting foods.
  • The hidden flavors of the savory tastants were cheddar cheese, onion, horseradish, ranch dressing, taco, or parmesan.
  • Sweet flavors were cocoa, spearmint, banana, strawberry, raspberry, and malt.
  • A control group of 100 volunteers did not use tastants. Both groups were allowed to diet and exercise if they were already doing so. For both subjects and controls, weight and body mass index were measured before and after the study.
  • At the start of the study, the treatment group had an average weight of 208 pounds and average BMI of 34, which is considered obese.

The Results:

  • After 6 months of using the crystals, the 1,436 subjects who completed the study lost an average of 30.5 pounds, compared with just 2 pounds for the untreated controls.
  • Their BMI dropped by an average of 5, moving them from obesity to the overweight range. Controls had an average BMI decrease of 0.3.
Hirsch theorized that subjects lost more weight than controls did because the tastants made them feel full faster and therefore eat less. However, he did not track the amount of food the subjects ate. He also noted that the diet works because it is not based on restriction.

Is the "Sprinkling Diet" a Future Trend?

It is an interesting study, although I would like to see some more rigorously controlled follow-ups. Also, what the heck are those crystals made of? The article does not say, but it may raise a few eyebrows.

Hirsh also notes that you can employ other techniques such as sniffing food (highly advisable - especially in fancy restaurants and on first dates), chewing a lot and eating lower calorie foods with seasoning. This begs the question: Would a control group assigned to real spices produce similar results?

I think making bland, healthy foods taste better certainly will up the chances of losing body fat. I think there is a lot to be said for savoring the taste of your food as the study's author suggests, and I think that stocking your spice rack is a step in the right direction.

More like this in Science · Jun 20, 2008

31 Comments

Heather on 06/20/08

Good thing I know how to cook well and can make food taste good to begin with. :) Spices!

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DR on 06/20/08

Interesting stuff. I am curious to see the science behind it. Why does it work?

I remember not too long ago, a few studies saying the eating a meal with a variety of different flavors, textures resulted in the diner eating more calories than a diner with a plate heaped with 1 or 2 foods. Their point was that variety resulted in the diner eating more food.

Re: the crystals themselves - what are they made of???

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Judy Wyatt on 06/20/08

If the control group consisted of people who were effectively ignored for the 6 months of the study, then I would suspect that the "Hawthorn Effect" was responsible for the differences between the groups.

In the book "Snake Oil Science" by R. Barker Bausell, the author discusses the difficulties in setting up adequate controls for experiments. One of the things he discusses is that it is well known that people:
- who know that they are being observed, or
- who are asked to do something specific in a study, or
- who are given procedures or products that they are told will possibly help them in some manner,

will tend to behave differently by:

- working harder at the assigned tasks or processes, and/or
- taking their prescribed meds more conscientiously, and/or
- avoiding harmful activities that might exacerbate their conditions, and/or
- reporting helpfully what they think the experimenter wants to hear, and/or
- actually believing that they have been helped by the procedure whether or not there are any measureable improvements.

It appears here that there were indeed measureable improvements, but because there was no placebo to control for the other above Hawthorn Effects, it isn't clear that the magic pixie dust was responsible for the measured differences. That is, the folks who were ignore didn't have this shaker of magic pixie dust to sprinkle over their food at every meal, and so probabaly forgot for long stretches that they were the control group -- if they even were told that they were partakers in the study at all.

Now, I'm just speculating here, because I haven't looked at the study itself (lazy person that I am), but based on Mike's report of it, it looks to me that it doesn't prove anything except that the folks who sprinkled magic pixie dust on their food paid more attention to their diet than the folks who just went on with their normal daily activities.

On the other hand, spices and herbs certainly perk up otherwise bland food! Yum!

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Mike H. on 06/20/08

wow - what a thorough and helpful analysis Judy - thanks! I'm going to look into that book "Snake Oil Science". Sounds like a great read to brush up on critical thinking.

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Judy Wyatt on 06/21/08

Mike,

I was going to not-so-modestly say thanks for the compliment, but I have to give credit to the book. :D The author explains things so well in layman's terms that when I read your excellent post, the words "Hawthorn Effect" popped into my head, and I was able to find the reference page quickly, and spout my "analysis" as if I had indeed made an analysis of the experiment. I can heartilly recommend the book!

Your description of the experiment is actually more detailed than the description on Dr. Hirsch's website, linked to by Susanna below.

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KenLin on 06/20/08

'If healthy food tasted good ...'

When an article starts with that phrase, you know it's going to be an ad for something stupid like 'diet sprinkles'. sheesh.

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moddoctor on 06/20/08

This study is interesting but it's published by "Smell & Taste Treatment and Research Foundation". That's not a bad thing, but it's the author's institute. That suggests the possibility of less than complete academic rigor in reviewing the numbers and study construction. If this were in say American Journal of Clinical Nutrition, I would be more impressed. That doesn't make it invalid but it certainly carries less weight than peer reviewed data.

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Abbie on 06/20/08

Wow, very interesting! Can't believe what this world has come to...

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Tom ( Nutritional Supplement ) on 06/20/08

I agree that preparing healthier food in a manner that allows it to retain its nutritional value while tasting good will most likely lead to more people eating better food. I think many people say to themselves that food that is good for them must taste bad, and therefore don't want to even try it. I'm not so sure that the 'sprinkle diet' is going to catch on and be effective, but I can see validity to making healthier food taste better.

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CindySense on 06/20/08

This diet intriques me. I wonder what they will think of next!

Correct me if I'm wrong, but I could swear that studies have proven that artificial sweetners don't work, because the it doesn't release the same chemicals to the brain that real sugar does.

I would think that these so called "Sprinkles" would be similar in that it would not send the correct signals to the brain.

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Spectra on 06/20/08

Interesting. I know a lot of people (my husband included) that don't like healthy food because they don't like the taste of vegetables or salads. A lot of people will eat broccoli with loads of cheese and butter on it, but that kind of cancels out the nutritional value of it. I guess if these flavor crystals (I'm guessing they are freeze-dried artificial flavor liquids) make broccoli taste like ranch dressing or cheese and people eat it, it's probably not a bad thing. Of course, you can probably get a similar effect by seasoning your veggies with herbs, garlic, lemon juice, or other low-calorie flavor enhancers.

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RedPanda on 06/20/08

I agree with other posters who suspect that this "research" is geared towards selling yet more processed foods.

And why on earth would anyone want to put strawberry or raspberry fake-flavoured sprinkles on their food when real strawberries and raspberries are very low in calories and also very healthy?

Sheesh!


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Spectra on 06/22/08

I don't necessarily think it's a gimmick to sell more processed foods; rather, I think it's a way to make natural foods taste a little better so more people will eat them. I guess it's probably best to enjoy your vegetables and fruits au naturale, but I think it's a little better to eat fresh veggies with a little flavor sprinkles on them than say, those overprocessed frozen veggie kits with all the cheese sauce and sodium in them.

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Kate on 06/20/08

Actually, the "Tastants" aren't sweeteners, they won't change the flavor of your food at all. Dr. Hirsch is a very well respected doctor -- published over 180 times in medical journals. His study and paper were peer reviewed and it was presented at the endocrinology society. Truthfully, after looking at the paper and hearing Dr. Hirsch speak about it, this doesn't seem like another gimick. There is a lot of science and research behind this...

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Quito on 06/20/08

There's no way this study could be double-blind, but depending on how they ran the experiment, it could still be immune to the probe effect. I doubt the study's results, though - that's an average difference of around 500 calories a day between the two groups.

MIke and/or Kate - I'm traveling this week. Can either of you send me a proper reference to the study? I'd like to read it for myself.

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Susanna on 06/20/08

I found the study on Dr. Hirsch's website: http://www.smellandtaste.org/index.cfm?action=research.sprinkles

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Quito on 06/22/08

The information on his web site is meaningless, and the web is littered with PR nd news bits about his research.

Does anyone have solid reference to his work, in an actual journal - perhaps cited in the book on this topic by him?

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Barbara Bourgeois on 06/30/08

Kate,
I just got my first month supply of Sensa in today. Have you tried it? If so, did it work? I am usually so skeptical, but Dr Hirsch's video was very convincing. I figured I had nothing to lose, since it has a money back guarantee if not satisfied. I sprinkled some on my dinner and did not eat as much. I usually snack all evening! I have sprinkled everything I tried to eat, but don't feel hungry for anything. Please let me know if it worked for you.
Barbara

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Cari on 06/21/08

Well I find it interesting having recently moved from South Africa to America to find how much more salty and sweet American foods are than back home. I think USA foods must already have many more flavourants added than South African foods. So maybe that magic pixie dust fairy should just tell American food manufacturers which magic crystals to use and viola.... there apparently go the worlds obesity problems!

But also...losing weight really isn't the challenge we're facing. I've lost weight on just about every diet even the crazy ridiculous ones, I ever went on - it's keeping it off.... guess we've just gotta keep sprinkling!

I'd also be interested to see if there was any connection between the researchers and the sprinkles.
Cari

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Pat Blanks EasyDietMeals.com on 06/21/08

No doubt, you did a good study for this post.

If Sprinkling diet really showed such a good results then may be it could be the future diet.

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Jane on 06/21/08

So, I'm curious about who sponsored this study. Since diet soda and diet food have been around people just keep getting fatter. This clearly isn't the method. You're right people need to be all about whole foods.

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Lose weight for life on 06/22/08

wow, that is really interesting. Usually the tongue can pick up on suger and flavour supliments and not make us feel as fulfilled, but in this case it doesn not appear to be the case. Definitely worth further investigation.

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Kym on 06/22/08

I would love to know what was really in those sprinkles.

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Gabrielle on 06/22/08

I don’t think this study had a big enough sample size to justify a conclusion about whether or not this technique will be able to help with the general obesity problem. It does mark it as an area for further study though. The results will no doubt be very interesting.

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Missy on 06/22/08

Hi guys. This dateline piece is posted on Youtube and it explains more about the doctor and how it works. Http://www.youtube.com/watch?v=HdxPqgssk0c

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Missy on 06/22/08

also can find the ingredients on the website at trysensa.com

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Mike H. on 06/23/08

Thanks for the heads up, Missy! I'll check it out when I figure out why I can't download the latest flash player. Blasted windows '78!

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helpful on 06/23/08

This link has a discussion of the study--was done a while back--and there are some spice combination recipes to try at home if you want to try out the concept. I would love to find a copy of the magazine article that mentioned it.

http://bodyflexsupportgroup.yuku.com/topic/516/t/Anyone-remember-the-Sprinkle-Thin-spices-combos-posted-here.html


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Angela VL on 06/23/08

Seems that it might be a little better to just retrain your tongue to find healthy foods and cooking methods you enjoy. Last year my husband was working really hard at losing weight and found that he had a new found appreciation for foods he would normally pass on, just because they were healthy and he "could" eat them. I made a fruit salad for him once that had some raisins in it(he normally doesn't eat them)and he ate every one of them saying they were the sweetest treat he had eaten all day.

I'm doing the same thing now, trying to find healthy alternatives to cravings... hummus and veggies instead of chips for a snack, etc.

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JoLynn Braley on 06/24/08

Hello,

The 2nd commenter asked about the ingredients, you can find them here - http://www.trysensa.com/index.cfm?action=shop.viewoffer - just click on the link on that page that says "View Ingredients".

It contains natural flavor, which is another name for MSG. You can research this online and there are many books out about this, one I recommend is Excitotoxins by Dr. Russell L. Blaylock. MSG has been linked to Alzheimers and Parkinson's disease along with a whole host of other health maladies.

Another ingredient of Sensa/the Sprinkle Diet is maltodextrin. This often contains MSG but not always, unlike the ingredient natural flavor, which can contain anywhere from 20-60% MSG.

It maks a lot of sense that MSG is an ingredient of this product since it is a taste enhancer. I encourage everyone to research these ingredients on their own if you are concerned about the effects that MSG has on the body - it's found under many different names (hydrolyzed vegetable protein is another big one) and is common ingredient of processed food.

Just another reason that I suggest creating a healthy lifestyle and switching to whole foods that you learn to cook with herbs and regular spices, not only to lose weight but to feel great with loads of energy. ;)

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Jolie Nadine on 06/30/08

JoLynn, the Sensa tastants actually don't contain MSG. (See here: http://www.trysensa.com/index.cfm?action=home.proof) I've been using them for 2 months (I'm a beauty editor/blogger who attended a conference that Dr. Hirsch spoke at in May) and they've been working, slowly but surely. Not only do I feel fuller faster, but it's changed the relationship I have with food; this can be achieved through other means that are sometimes recommended to slow down and appreciate your meals (such as not watching TV while eating, or even eating in front of a mirror), but the Sensa tastants work all the same.

I already have a penchant for healthy food and I'm not a heavy person (I'm 5'6" and 130 pounds, so don't have much weight to lose, barring that increasingly growing spare tire around my waist and the chubby little thighs that have been there since birth!) but I have lost about three pounds, and it's not been water weight. Like I said, I've noticed that I have a different relationship to food, and I now only eat when I am hungry, and stop when I'm full. This is really just common sense, and no, you don't have to buy the Sensa tastants to stop when full...but if you're the kind of person who's been trained your entire life to clear your plate, or who mindlessly eats, it's interesting to watch as Sensa does, indeed, influence your eating habits for the better.

Perhaps I just drank the Kool-Aid, but I found Dr. Hirsch extremely impressive, and as another commenter mentioned, his findings were accepted and presented to the Endocrine Society in San Francisco last week. There's an established link between taste and smell, so (shrug) it all makes sense to me. I guess time will tell if it's just hype or something truly revolutionary! (Like, you know, *science*.)

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