Canine Diseases Linked to Grains in Dog Food (Part 1)


Dog food grains. Canine allergies. Could they be related? Well, in a word, maybe.

Take bread mold. As unappetizing as it looks, bread mold can seem fairly harmless.

Yet mold and other contaminants sometimes found in cereal grains used to make dog food can cause serious illness — even death.

Surprisingly, cereal grains can be some of the most problematic ingredients in commercial dog food.

Grains Can Conceal Hidden Contaminants

After grains are harvested, they must be stored. And the longer the storage period, the greater the risk of contamination by one or more of these nasty pollutants…

  • Insects
  • Mites
  • Mold

What’s worse, many dog food companies are famous for using the cheapest grains they can find — rejects and by-products of the human food industry…

Cereal grain leftovers classified as “unfit for human consumption”.

And low quality ingredients like these can always be fertile breeding grounds for some of the nastiest contaminants in dog food.

How These Dangerous Contaminants
Can End Up in Your Dog’s Food

Insects — and their droppings — can be found in cheap, low-quality grains.1

The most common insect contaminants include…

  • Red flour beetles
  • Granary weevils
  • Rice weevils
  • Meal worms
  • Flat grain beetles
  • Indian meal moths
  • Saw-tooth grain beetles

Grain infestations are so common that damage done by insects after crops are harvested is sometimes greater than the damage done during the growing season itself2.

That’s how the carcasses of dead grain insects can so easily end up in commercial dog food.  These common dog food pollutants should be considered prime suspects in any attempt to prevent canine allergies.

Grain Mites Quickly Multiply Out of Control

So, what do you get when you mix a low-quality feed grain with plenty of moisture — and then store them together over time?

Mites. Grain mites. And lots of them.

This tiny eight-legged creature is a close relative of the dust mite, that infamous household pest that might just be one of the most common causes of allergies in the human population.

And can they ever multiply! One female mite alone can lay up to eight hundred eggs in as little as just nine days3.

Some of these juvenile mites morph into a stage known as the hypopus.  During that phase their bodies harden and the mites develop numerous small suckers on their underbellies.

These tiny arthropods then use their suckers to attach themselves to the bodies of grain weevils, beetles and other insects.

So, with a little help from their newly-found “friends” they quickly spread throughout an entire bin of feed grain.

Within days, the stored commodity can become completely infested with disease-causing grain mites.

A Likely Cause of Chronic Allergies

Atopic dermatitis can be an agonizing condition for dogs.  It can go completely undiagnosed for years. Yet it is remarkably common.Cheap Dog Food Cereal Grains Can Cause Atopic Dermatitis

The disease is a chronic and allergic skin reaction to specific pollutants (called allergens) found in a dog’s environment.

Symptoms can be so common it’s easy to overlook the everyday signs of the disease…

  • Chronic itching
  • Excessive licking or chewing of the paws, abdomen and groin
  • Deep pink, reddened or oozing ears
  • Balding areas (known as “alopecia”)
  • Black pigmentation of the skin around the groin (in later years)
  • Secondary yeast or bacterial infections (especially in the ears)

So, what are these “specific pollutants” that cause this miserable disease?

Well, it’s been known for years that atopic dermatitis can be caused by common household dust mites.  You know, the kind you find in your home’s carpeting.

The same kind of mites that cause allergies in humans.

So, could mite-contaminated dog food have anything to do with canine skin allergies?

You bet it could. And here’s proof…

Recent Research Points an Accusing Finger

A recent study of atopic dermatitis conducted at Wright State University has concluded, “storage mite sensitivity in dogs may be as important, if not more important, than dust mite sensitivity”.4

In other words, the consumption of grain storage mites and their carcasses must be considered an important cause of atopic dermatitis in dogs.

That finding clearly implicates grain-based dog food as a possible cause for this far-too-common condition.

In Part 2, I’ll cover a much more dangerous problem with the grains used to make dog food — deadly toxins.


  1. Extension Entomologists, North Central States, Federal Extension Service, U.S. Department of Agriculture
  2. Peairs FB, “Insect Damage to Farm-Stored Grain”, Colorado State University Extension, Number 5.545
  3. “Flour or Grain Mites”, Entomological Notes, College of Agricultural Sciences, Penn State University
  4. Arlian AG et al, Serum immunoglobulin E  against storage mites in dogs with atopic dermatitis, American Journal of Veterinary Research, 2003 January, 64 (1):32-6
  • disqus_SBl7sCuYS7

    What you have read is meaningless . A lot of incorrect information on the internet All kinds of scams.
    Find a specialist. That’s all I’ve got.
    Peace out.

  • LunaLove

    they havent been able to find a diagnosis therefore i will mention what i have read mayne it will help them maybe not.

  • disqus_SBl7sCuYS7

    That is not what I am saying, get a diagnosis first, only a veterinarian that has examined the pet can diagnose, Then you can evaluate your treatment options.
    If you need to see a specialist, so be it.

  • LunaLove

    im not blaming the food for the bakers lung as to my understanding it can come from mites. i have a friend whos dogs cough all the time. they been seen numerous times by vets that cant pin point the problem. i was asking about the canine caviar for my own dogs as ive seen people have problems with flour beetles. and since it made my dogs sick as soon as it came out of the bag i was unsure if that had anything to do with it or not. sorry i know this is confusing.

  • disqus_SBl7sCuYS7

    No, I don’t.
    I think you should make an appointment with a veterinary internal medicine specialist. I am assuming that your regular vet has not been helpful?
    Have the dogs in question had recent checkups (annuals recommended) lab work?
    If not, I would start there.
    What are the symptoms?
    You have to rule out medical causes before you can blame the food.

  • LunaLove

    thank you! do you know anything of dogs getting bakers lung?

  • disqus_SBl7sCuYS7

    excerpt below, click on link for full article
    Where are storage mites commonly found?
    These particular mites (Tyrophagus putrescentiae, Lepidoglyphus destructor, Acarus siro) are present in dry foods, cereals, grains, straw and cheese—i.e., substances that can get moldy. Like dust mites, storage mites can cause nonseasonal signs, including pruritus, erythema and recurrent otitis in dogs and cats. They’re well-known in humans for causing asthma and allergic rhinitis (“baker’s lung”).
    Data have shown that storage mites live in conjunction with house dust mites and can be found in bedding, mattresses, upholstered furniture and fabrics. One study in humans found storage mites to have overtaken dust mites as a leading source of allergy.
    A popular misconception is that storage mites are present in bags of food or cereals from the manufacturer. In one study, out of 10 bags of dry dog food, one was found to have storage mites, but the rest developed the mites after being in the owners’ homes

  • disqus_SBl7sCuYS7

    see my post above yours

  • disqus_SBl7sCuYS7

    excerpt below, click on link for full article
    Where are storage mites commonly found?
    These particular mites (Tyrophagus putrescentiae, Lepidoglyphus destructor, Acarus siro) are present in dry foods, cereals, grains, straw and cheese—i.e., substances that can get moldy. Like dust mites, storage mites can cause nonseasonal signs, including pruritus, erythema and recurrent otitis in dogs and cats. They’re well-known in humans for causing asthma and allergic rhinitis (“baker’s lung”).
    Data have shown that storage mites live in conjunction with house dust mites and can be found in bedding, mattresses, upholstered furniture and fabrics. One study in humans found storage mites to have overtaken dust mites as a leading source of allergy.

    A popular misconception is that storage mites are present in bags of food or cereals from the manufacturer. In one study, out of 10 bags of dry dog food, one was found to have storage mites, but the rest developed the mites after being in the owners’ homes

  • LunaLove

    also can mites be found in food that is grain free?

  • LunaLove

    so this is my question then to someone that may be able to help me. i gave my dogs canine caviar and it made them incredibly sick and only after a few pieces of kibble. could this be to blame? the bugs that is. only reason i bring this up is becuase i have seen posts that canine caviar had flour beetles in the bag. i never seen any bugs but maybe it was mites. i have three dogs one of which i never gave the canine caviar to and the other two had a small amount and only those two dogs got sick.

  • Kathy

    Why don’t people use punctuation? Do they not know what a period is? I don’t get it. When I read one long continuous post with no punctuation, it is just hard to decipher the meaning of what is being said. You know the rule don’t you? A period comes at the end of a sentence. Then you type the next sentence and put a period after that. Thank you.

  • lisa

    Purina Dog Food WILL kill a dog. I put my Nikita on Purina Healthy Weight and at 4 ys old she died from it. There was a HUGE class action suit due to the amount of dogs dying after eating foods. Don’t blame yourself, remember the dog was sick before you gave it the Purina.

  • Grace Henderson

    I used Trifexis for years for my senior pit bull. After she passed & I got two puppies, I talked to the vet in the new city I’m living in. This vet WILL NOT sell Trifexis in her practice because animal deaths have been directly linked to its use. She said younger dogs tend to be more at risk. I was hesitant to try anything else; I switched to Trigexis because I knew that my APBT girl Trinity hated the topical treatments. She would spend the day actively trying to get the monthly treatment off of her neck! It never seemed to DRY, either… But then I started researching the Trifexis deaths myself. I agreed to try the pups on the newest all-in-one topical monthly treatment Revolution because unlike FrontLine, which is oil-based, Revolution is water-based! The vet gave me two samples of it to make sure the pups did okay with it. They did great. Two years later they’re both still on it, plus our third rescue Lucky. Since it’s water-based it dries in an hour! None of them mind me putting it on them, and none of them try to get it off, like Trinity did with FrontLine.
    In other words- do research. And get rid of the Trifexis.

    Hope this helps. Peace.

  • Lisa

    Years ago (way before disposable diapers) cornstarch was used to keep babies bottoms dry, helping to PREVENT diaper rash by helping to keep the skin dry.

  • Jenai Herod

    I’d try salt instead and leave it your carpet for about a month if you need a natural flea and mite control .it dries out the bugs and their eggs naturally so they can’t hatch .corn starch ??? Lol where do people get there information. You can’t use corn starch .they use to use it for diaper rash too but not recommended anymore. It’s food .try salt it is nature’s best weapon

  • Jenai Herod

    It’s not the soap it’s the mites ,dust mites using a good organic soap is fine but rinsing any detergent is always good . The cleaning may have just stirred up the mite population but not removed the problem .

  • Jenai Herod

    Carpet mites is the biggest allergen when not food related . Mold spores and yeast would be my next suspect

  • Jenai Herod

    PS chamomile and triptophan is only 22.00 and less at pets mart and comes in a tube for dog anxiety . Traveling and fireworks ,thunder storms etc .that stuff does NOTHING for atopic dermatitis . What he could have told you is benadryl for a buck at the dollar store would at least give an antihistamines benefit . YOUR VET IS SCAMMING YOU DEAR I’d be furious and demand an explanation and my money back he’s ripping you off . I have had an allergic dog 9 years now and trust me when I say your being ROBBED by your vet and unfortunately most of us are no better off these vets are out of line and no one is calling them on it

  • Jenai Herod

    Are you kidding ? Vets must think we are stupid . They charge prices so absurdly marked up they should be criminal charged for price gauging because the antibiotics pain steroids and most rx s cost as little as 75% less than they get and they often prescribe useless courses of these mmds to work only as long as they are taken and as soon as you finish your right back in for another 300 dollar bill all over and over again when they know damn well what they are doing is profit motivated and not what’s best for our dogs the other thing they haven’t told us is that the mercury and aluminum in vaccines is also a source of allergy in dogs as it is in humans and also gmo foods . Then add the fact they use dead shelter pets and render them into ANIMAL PROTEIN MEAT PROTEIN MEAT BY PRODUCT AND ANIMAL BY PRODUCT. ( meat surprise ! ) in the wild dogs live an average of 20 yrs most domestic dogs are lucky to see 12 Knowing what we are paying for at the store these days it’s no surprise !

  • Do “gritty” crunchies mean it is contaminated?

  • Cyndi

    Maria, I am so sorry for your loss. I was in your position 3 years ago when I lost my beloved doggy soulmate Moose. I blame it on the food I was feeding him too. But, I’ve learned now, you live and learn. I vowed that would never happen again to any dog I owned. I did research, a ton of research, and switched my current dog over to raw almost 2 years ago and haven’t looked back. When it’s done right, a raw diet is the best thing you can do for your dogs.

    Again, I am so very sorry for your loss. My thoughts and prayers are with you and your family.

  • Maria Shephard

    Im just about to start the raw meat diet for my dog, was going to be starting my 2dogs on it but sadly on monday morning i came down to find that my beautifully natured Rotti had died during the night, he had been ill since Saturday eve, he’d had the virtually same illness about 5-6 months previous only difference was his symptoms where worse back then, the vets had kept him in for 2 nights under observation, he had xrays, blood tests the works but couldn’t find anything wrong with him, so i changed their food from omega tasty to Purina Beta Maintenance just in case it where the food and after about 10days he was suddenly well again, whatever it was had seemed to ruin his stomach’s tolerance to anything other than his dog food & whenever he got the chance he’d be up at the side clearing my kids plates etc which would then make him sick (and for a boy who LOVED to eat everything, offered or sneakily raided when given the chance it was hard), and so when he became ill this time and wasn’t as bad as before we naturally presumed he’d be ok like before and we’ll get him into the vets Monday! Both dogs had been ok with Beta until about a month ago when My GSD started to pull chew & scratch her coat stupidly short, no fleas no skin allergies no mites etc, Thankfully Star has not been affected in the same way Boss had. I blame the food i new that some foods where better for different conditions of dog ie working, sensitive etc but i never knew that dog food contain ingrediants that are potentially lethal for dogs. Why is it not illegal?!! Its disgusting that it is allowed to happen!
    Purina Beta c adult “WITH CHICKEN” Composition: Cereals (wholegrain 20%), Meat and animal derivatives (meat 14%,
    chicken 4%), Vegetable protein extracts, Oils and fats, Derivatives of
    vegetable origin (dried beet pulp 1.1%), Vegetables (dried chicory root
    1.1%), Minerals.

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  • somebodysme

    Thanks, this is very helpful information and people may not consider these things! I’m going to try the corn starch idea! Never heard of it. Since I have gotten my allergy dog, the weeds in the lawn have taken over! Gotta do whatcha gotta do though! I just keep it cut short and no one really cares anyway if I have weeds! HA!

  • Jeannette

    I am VERY sure the itching is due to the carpet being “cleaned”. I have cockers and boy do they have allergies. Or so I thought. By process of elimination I figured it out. A little weird but when I have mine cleaned I ask for nothing but baking soda and vinegar. And no stinky spray after. The itching and biting of their feet completely stopped. I also use V & BS to wash their bedding and winter coats. Watch what you use on your floors and rugs. All cleaners leave a residue. And outside ditch the weed killer and lawn fertilizer. POISON to dogs. Use vinegar to kill weeds between bricks and walkways. Corn starch kills weeds in the lawn. But I would rather have a healthy dog than a golf course lawn



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  • Pattyvaughn

    A huge number of dogs have vomitting/upset stomach issues from Trifexis and Comfortis.

  • I’ve heard some people have to cut it in half and give 12 hours apart instead of a whole pill at once because of side effects.

  • Pattyvaughn

    Rabbit pellets have probiotics and digestive enzymes in them. That could be why your dogs want them. I personally don’t like Trifexis. It’s pretty harse on the system and I don’t like giving flea stuff except when it is actually needed. Even then I would rather it be as natural as possible.

  • Wow- totally gross and probably the cause of two of my three labbie ladies’ allergies, scratching, biting, licking, infected ears, yeast on the belly, and so on. Both were foster labs I fostered then adopted. One is 13 and was a ‘one dog puppy mill’ according to the vet who examined her after she was brought into the rescue program. She also has other problems related to having one or two litters a year for most of her life-there’s more, but not about allergies… my 8 yr old chocolate lab was a stray, brought into the lab rescue program, adopted… then ended up running loose, hit by a car, and that’s when her mast cell tumors (cancer) were found. But the biting, licking and scratching, etc. got worse shortly before I adopted her, then seemed better, then became extremely severe and misery-making – after we switched from those nasty liquid flea/tick meds (provided by the charity free for the foster dogs) to the new combination product, Trifexis. All 3 of our dogs (the third is our lab/bull terrier mix, Trixie, who we’ve raised since she was 5 wks old) are on Trifexis now, all three like to ‘graze’ out in the yard and for some reason are crazy for june bugs and rabbit pellets (I don’t mean food!) Obviously this is NOT an ideal addition to their diet, but it is impossible to watch each one every second they’re outside, and I would go crazy trying! The vet said food allergies, and tried to sell me this ridiculously expensive food, but these dogs have been on the same food for several years now, and did not have problems before the switch to Trifexis, though they are miserable when the mold count gets really high… it’s so confusing and my doggies are so miserable, but we can’t afford to experiment with weird foods or multiple meds, etc. So – has anybody used Trifexis, and has anyone’s dog(s) had problems caused by it?

  • Cate

    Digestive Enzymes

  • Cate

    Food has been ruled out. He started scratching after she moved to a new apartment last year. She had the carpet shampooed last week. I looked at the Dr Becker site & thought the Enzyme booster might help.

  • Hound Dog Mom

    Does your friend know what’s causing the dermatitis? Fleas, environmental allergies, food allergies? Depending on the cause (if it’s know) there may be some things your friend can do to mitigate the issue.

    Chamomile and tryptophan are typically used for anxiety issues and are known for their calming effect which is likely why they’re making your friend’s dog sleepy.

    If the dog is just in need of an immune boost there are many supplements that help boost the immune system – echinacea, medicinal mushrooms, colostrum, probiotics, astralagus, glutathione and beta-glucans, etc. These types of supplements can be purchased on their own or there are many combination supplements available that combine more than one of these immune-boosting ingredients. I would also recommend that your friend evaluate the dog’s diet – a healthy, species-appropriate diet is the foundation of a strong immune system.

  • Cate

    My friends Shih Tzu has just been diagnosed with Acute Dermatitis. The vet prescribed chamomile & tryptophan ($140) but it just makes him sleepy. Is there something to better to boost his immune system ?

  • aimee

    Hi Melissaandcrew,

    I understand where you are coming from. Over the years though I have significantly changed my thinking in regards to aggression, not only between dogs but also between dogs and humans.

    I no longer think of aggression in terms of dominance or pack structure.

    I see dominance as a description of a relationship in a particular context vs a personality trait. So for me there is no such thing as a “dominant” dog.

    I also don’t embrace the idea of “alpha” especially as the literature is removing that term from wolf field studies and field studies of feral canines have not found that hierarchlial relationships exist. If hierarchial relationships don’t exist between dogs then it doesn’t make sense to me to think they would exist between two differnt species : dogs and humans

    This article may explain better how I view things For the short version you may want to start reading at the section titled “interactions between dogs and owners.”

    In my own little household of three if you dropped food Brooke will always secure the resource. So I would say a relationship exits in that context. Jack and Chloe defer to Brooke. If Brooke isn’t present Jack would secure the resource. Chloe typically runs away from dropped food if either Brooke or Jack are present.

     Brooke though shows very little guarding behavior, once she has the resource she shares. Jack slithers on his belly head sideways on the ground and Brooke will let him share.

    But if Chloe or Jack have possession of something they will charge Brooke if she comes near.  Chloe .. my little girl that runs away from an unclaimed resource is my most active defender of a resource once she has it in her possession. Neither Jack nor Brooke will approach her if she has food or a chew.

    I think diet may influence behavior but it may be specific to the dog 


  • Toxed2loss

    O.k. This is in reference to aggression issues. I was watching a YouTube video of an interview with

    Dr. Blaylock, neurosurgeon, about vaccine toxins, and how they distrupt brain/emotional function. A third of the way he brings in excitotoxins (MSG & Aspartatame) and the synergistic effects that they have with vaccine adjuvants and often manifest in aggression. Just in case anyone’s interested…

  • Jkmcgowan

    Thank you!

  • Toxed2loss

    If you conclude that his car sickness could be from fumes, you might want to get an activated charcoal (coconut, not fossil fuel) air purifier for the car. Car interiors are extremely toxic, with all the decomposing polyvinyl chloride, plastics and synthetic carpets. :-} You guys will feel better, too.

  • Jkmcgowan

    Thank you doggonfedup! 

    We will give this a try.

  • Jkmcgowan

    Thank you Shawna! 

    When Murphy came to us he would breath very fast while sleeping/resting. He tired quickly when exercising. I made videos of the breathing so our Vet could see. Sometimes his breaths per minute (bpm) were over 100. He would range between 45-75 bpm most of the time. We were concerned and took him to our Vet. We had x-rays taken, an EKG, and complete blood work as well as stool & urine tests. They found he had kennel cough, hook worms, tape worms, and Giardia. They dewormed him and put him on Doxycycline for 30 days.The other anomaly found was his heart beat during the EKG would go from 110 to 60. Our Vet referred us to NCSU Animal Hospital in Raleigh, NC for more extensive testing. Murphy was there 3 days. They did a CT Scan, other x-rays, drew joint fluids from his knees, biopsied his lymph nodes, which were a little swollen, another EKG, and  complete blood work, including a special screen which tested for all flea, tick, and other parasite caused diseases (this screen took almost 4 weeks for complete results).They found no problems other than his heart rate was 60 bpm but would jump to 110 bpm when someone walked by the table he was on. They were not concerned with this.The put him on doxycycline for 30 days while the blood screening was being run. During this time we observed that his fast breathing episodes seemed to diminish. Based on this, they continued Doxycycline for another 30 days. This ended the first week in September. His breathing has now returned to normal (12 bpm- 25 bpm). We think we are past the fast breathing phenomenon.Joanne & I are retired and Murphy spends almost all of his time with us so we do observe him more closely than most people would. We tried very hard for the first 30 days we had him to make sure that he did not take over any areas in the house and followed all the guidelines they gave us to keep this from happening. We did occasionally put him in his crate (where he sleeps each night) and leave him while we go out for a while so that he did not develop separation anxiety. After that we pretty much let him go anywhere in the house on his own and he spent most of his time with one of us, cuddling and getting rubs. During this time we were also teaching him about toys and fetching. He originally had no interest in toys and did not fetch when we threw balls. He would just sit and watch. We thought he never had toys to play with. He now plays with his toys very gently and has just start biting down hard enough to make them squeak. He does not chew or tear apart his toys. He chews down very gently.We adopted Murphy from Carolina Poodle Rescue near Spartansburg, SC (about a 10 hour drive from us). They rescued Murphy from an animal control Shelter in Charlotte, NC.. He had been picked up as a stray. CPR had him 3 weeks before we adopted him from them. He had just been neutered the day before we picked him up. They and our Vet estimated his age at 2-4 years.  Just thought I would put this background out there so you have as complete a history for Murphy as we do. Here is a link to Murphy’s album on FB if you are interested in seeing photos of him.

  • doggonefedup

    Motion sickness can be eased be stimulating the skin. I don’t recommend letting him stick his head out the window because among other things his eyes can get wind burn, but, petting or massaging the dog mostly on the head and face but also along the body will actually help with the motion sickness. When the eyes see the motion the body needs to “feel” that motion like the air moving about the body. It’s worked for me in the past.

  • Jkmcgowan

    Betsy, the pills haven’t worked with Murphy. We have also given him a Pepsid to try to calm his stomach. No luck.

  • Jkmcgowan

    Thanks Toxed2loss! Good thought!

  • Jkmcgowan

    Thank you Marie! We will try Gingersnaps!

  • Jkmcgowan

    Thanks Melissa! The funny thing is he loves the car. If we have a car door open doing something and he is outside he will jump into the car on his own. When we are going for a ride he jumps right in the car. He will ride with his head out the window for quite a while when we are on the beach and when we are going slow on the hard road or he will sit and look either out the front or the side window. He does not seem to be anxious(fearful) of the car at all. After a while he will start salivating and will then throw up. Sometimes it will take longer than others. We have to drive about 2 miles to pick up our mail from a community box. We have been taking Murphy with us on the short ride to see if that will help with the problem. A couple of times he did not throw up while riding. After we got home & we were out of the car for a few minutes he then threw up. The last three times he was fine and did not throw up at all. I’m hoping that over time he will get better but would like to help him on the longer rides now, when we have to take him to the vet or for some reason we cannot leave him at home in his crate. Joanne & I are both retired so we have the time to work with him any way that is needed.

  • aimee

    Hi Shawna,

    I had to pull the original study… been a long time since I read it : ) I’m assuming you are only looking at the abstract.    

    From the study “Low protein diets, in conjunction with high carbohydrate content, may induce their effect by changing the plasma ratio of the amino acid l-tryptophan (Trp) to other large neutral amino acids (LNAA), thus affecting competition between Trp and LNAA for a common blood-brain barrier transport mechanism……..low protein diets result in a higher Trp/LNAA ratio thus enhancing Trp transfer to the brain.”

    All of the test diets exceeded AAFCO profile for Tryptophan. The protein sources were dried egg and poultry meal. Corn contributed some protein as well.

    But this study was “sloppy” on many levels IMHO.
    For example, the dogs were separated into three groups of 11 based on diagnosis. From the results section: “Significant changes in behavior were not detected within any of the 3 groups for any of the dietary treatments.” Hmmm ….behavior no change and no change in measured plasma Trp and serotonin levels either.

    But the authors instead of stopping there (which is what I think they should have done)  pooled the data from all 33 dogs and then looked for significance.

    For territorial aggression the behavior scale ranged  from 1-10. The owner’s scored the behavior and the criteria weren’t defined.   So as readers for all we know one persons “5” could be another persons “3”

    For territorial aggression LP 3.68, LP + Trp 3.17, HP 3.47 and HP + Trp 3.33.

    Statistical significance was found between LP and LP + Trp in a numerical sense but do we really think from a behavior sense there was any sig difference ??? 

    In the “dominence ” aggression group  Lp was 1.12. LP + Trp 1.29, HP 1.84 and Hp + trp 1.04. The scale was 1-10.

    I have to say I  don’t see any of these diets as having any meaningful  change on behavior.

    Could supplementing Trp alter levels  of serotonin in the brain by changing the Trp/LNAA favoring Trp transport… I think you’d have to supplement a lot…. and even then ???  Just My 2 cents

  • Toxed2loss

    Gas fumes, exhaust and especially diesel make me sick. I wondered if it would make a difference if the cab air recirc is on. He’ll get fewer fumes that way, if they’re in traffic. Just a thought…