Can the Carnivore Diet Be Used To Treat Hashimoto's Thyroiditis?

Carnivore Diet for Hashimoto’s Thyroiditis: Does it Work?

It's well known that diet has the potential to positively impact Hashimoto's thyroiditis

And, because it's one of the things that you can control 100%, it's of great concern to those people who suffer from this disease. 

Relevant to this discussion is a relatively new diet known as the Carnivore diet. 

This diet, high in animal-based products, has helped some individuals with autoimmune disease and Hashimoto's. 

Today we are going to explore in more detail what this diet is, how it may be working, and whether or not it is something you should try. 

Note: I am not advocating for the use of this diet but simply exploring how it can work and why it seems to work for certain people.

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Carnivore Diet Basics

The Carnivore diet has become popular in recent months (especially within the last year) due to success stories from patients. 

Beyond the success stories, there has also been severe criticism of the diet as well. 

If you've never heard of it, let this information help bring you up to speed. 

This isn't going to serve as a complete run-down on this diet but only as a brief introduction. 

If you elect to use this diet you will probably spend much more time looking at recipes and meal plans in the future. 

But, for starters, here is a list of foods which are included in this diet: 

  • Beef
  • Steaks
  • Roasts
  • Organ meats
  • Eggs
  • Dairy (butter, heavy whipping cream, and hard cheeses)
  • Water, Coffee, Tea, Bone Broth

As you can see, the diet focuses heavily on meats but does allow for a small amount of dairy. 

But, because of sensitivities to dairy from many people, it's often better to only add these foods in at a later date once you've transitioned into the diet. 

Aside from the foods listed above you are pretty much supposed to avoid all other foods, beverages, seasonings, alcohol and so on. 

In terms of food quantity, your main goal should be to eat until you are full and to only eat when you are hungry. 

In this way, you are letting your metabolism and appetite signals guide your feeding (1). 

One potential benefit to using this strategy is that your body will automatically calculate your caloric needs based on your metabolism (which is very helpful for those suffering from weight-related issues from Hashimoto's and a damaged metabolism). 

Even if you aren't using this exact diet, this strategy of matching your food intake to your appetite is a great idea. 

So that's the rundown of the diet, but our main question is this:

Does it actually work for Hashimoto's?

Does it Help Hashimoto's?

Generally, I like to see a moderate amount of research before I recommend any type of diet to those suffering from Hashimoto's. 

But I'm fully aware that certain things are just not likely to be studied intensively due to a variety of reasons. 

While the Carnivore diet doesn't have a large body of evidence supporting its use, that doesn't mean it should be completely disregarded. 

Before any clinical studies are undergone on any therapy there must be someone who supports or advocates for the therapy and shows that it can be efficacious. 

Then, once this is done, further studies can confirm suspicions or anecdotal evidence. 

Right now, we really only have this anecdotal evidence to work with for better or worse. 

But, surprisingly, there are some people, specifically with Hashimoto's thyroiditis, who have found significant relief using this diet. 

Relief from these individuals has come in the way of improved weight loss and symptoms which may be indicative that their thyroid function has potentially improved (increased hair growth and so on). 

This certainly doesn't guarantee that the Carnivore diet is helpful for Hashimoto's thyroiditis specifically, but it does raise a few questions:

First, is this diet worth exploring if you have Hashimoto's thyroiditis?

Second, if it is working, how does it work?

Third, if it is effective, what can we learn from this diet?

And fourth, is this type of diet safe? 

How Does it Work? 

It's not actually clear how this diet works, but there's no denying that some people on the diet are finding significant relief. 

But this begs the question:

How does it work?

I'm not 100% sure (I don't think anyone is), but if I had to guess then I would suspect that the major mechanism by which this diet produces significant results has to do with how it influences your intestinal tract and gut microbiome. 

It's well known that the locus for the development of Hashimoto's (and other autoimmune diseases) likely starts in the gut (2). 

A disordered gut microbiome (changes to the bacterial concentration in your gut) can precipitate damage to your intestinal lining which may result in 'leakage' of bacterial products into the bloodstream. 

These products can then trigger an immune reaction and result in autoantibody production through a process known as molecular mimicry. 

Beyond this, we also know that inflammation in the gut can interfere with immune signaling, alter neurotransmitter levels, allow for inflammatory products to enter the bloodstream and so on. 

With all of this in mind, if it were possible to target and fix many of these issues, would it help your autoimmune condition?

The answer is probably yes, at least for the majority of you reading this and perhaps that is how the Carnivore diet is helping. 

You're also necessarily cutting out the bad portions of the Standard American Diet including wheat, soy, gluten, and processed foods. 

The Carnivore diet happens to fit all of the following criteria:

In this way, the Carnivore diet may be acting as the ultimate elimination diet for many people. 

And we know that the elimination diet can have profound effects on the body (9), especially for certain individuals. 

We also know that other diets which exclude these food groups have also been beneficial for those with Hashimoto's including diets such as the AIP diet, strict paleo, the gluten-free diet, and so on. 

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It's possible that the Carnivore diet allows for the healing of the intestinal gut tract, normalizes hormones such as insulin, the balancing of bacterial species in your gut, and the reduction in inflammation or immune regulation systemically. 

This may be achieved through a process which mimics the fasted state simply because it alters where food is being digested in the intestinal tract. 

All of this is hypothetical, however, because it hasn't been well studied, but I'm speculating that it may work through these mechanisms. 

Long-Term Safety

Before you start this diet you should be aware that there are no long-term studies which show that this diet is safe or effective long-term. 

This doesn't mean that you shouldn't use it, but it does mean that you should proceed with caution. 

It would be less than ideal to find out that you are one of the people experimenting with their bodies only to find that this diet is associated with long-term issues down the road. 

As I mentioned previously, just because the Carnivore diet may have a positive benefit on your immune system does not mean that it has a positive effect on other systems in your body. 

Among those which may be compromised includes your cholesterol system and the absorption of certain nutrients. 

While the connection between dietary saturated fat and heart disease has been contested over a long period of time, it's probably not a good idea to personally test this data and consume massive amounts of dietary saturated fats. 

Some meta-analyses (10) conclude that dietary fat is potentially harmful to your body as it may lead to an increased risk of heart disease and/or stroke. 

So, while this diet may be helpful for your immune function, are you willing to trade the potential risk of cardiovascular disease for a reduction in your symptoms?

Some of you might answer yes, and that's a personal decision you might have to make. 

Also, it's worth pointing out that utilizing the Carnivore diet temporarily may allow you to reduce gut inflammation, promote healing in the intestinal tract, which may allow you to transition to a different type of diet which is more balanced. 

If you are using the diet in this way then you may be able to mitigate any long-term safety issues. 

Finally, another issue worth considering is that of nutrient absorption. 

Consuming a diet which is 98%+ in meats is likely to be low in certain vitamins, including Vitamin C, Vitamin D, Iodine, Magnesium, and potentially others (11). 

Theoretically, this may lead to a deficiency in these nutrients which may result in unwanted negative symptoms. 

This problem can easily be overcome, however, with the use of a multivitamin or other supplementation. 

If you opt to use this diet, just remember that you should ensure that you either supplement or ensure that you also are consuming nutrient-dense portions of meat such as organ meats which are incredibly nutrient dense (12). 

Meat and Hashimoto's

If you've been reading my blog you know that I've previously discussed something called Neu 5 Gc. 

Neu 5 Gc is a product found only in animals and some studies have shown that it may be associated with Hashimoto's (the exact mechanism isn't clear but you can read more about it here). 

If Neu 5 Gc may be bad for Hashimoto's and it's primarily found within red meat and animal products then how can the Carnivore diet be good?

Well, for many reasons. 

#1. The connection between Neu 5 Gc antibodies and Hashimoto's is still not well understood.

So, even though there is a connection between the two it doesn't mean that one causes the other or vice versa. 

#2. Assuming there is a negative connection, it's also possible that other factors are still involved which play a greater role in the development in Hashimoto's.

So, with this logic, even if meat may be bad for your immune function, it's possible that the elimination diet and its benefit on your body are greater than the negative impact that meat may have. 

In this way, you are basically choosing the lesser of two evils. 

#3. Neu 5 Gc antibodies do not equally affect all individuals. 

Due to a variety of conditions, including genetics, it's possible (and certainly probable) that even if red meats negatively impact some people, there will always be others who thrive on it. 

It's best to try to avoid reductionist thinking, especially as it relates to diet, as it may force you into a line of thinking which is inaccurate and unhelpful. 

Bottom line?

Even if red meats are bad for some people doesn't mean they are bad for all people. 

Should you Do it? 

I am very sympathetic to those people who are suffering from chronic conditions, including Hashimoto's, and who have been unable to find help. 

I'm well aware of the limitations of the current medical system when it comes to taking care of those with chronic medical conditions, especially autoimmune conditions. 

These individuals are often at their wit's end and just need some relief and they are willing to do drastic things to find that relief. 

If you fit into this category then perhaps the Carnivore diet is something worth exploring. 

But, if you proceed, be cautious and remember that this diet has not been studied long-term so there's no way to know if it's actually healthy or not for your body to be in this state. 

In addition, because of the many unknowns about the long-term safety of this diet, it's probably not a good idea to use it long-term. 

It may be wiser to use it as a type of elimination diet which then allows you to transition to other foods. 

You may also find success using it temporarily to allow for gut healing or a reduction in inflammation in your body. 

Utilizing the Carnivore diet in this way may allow for a reduction in some of the risks that we discussed previously. 

If you are new to Hashimoto's and you aren't sure where to start then I would probably recommend that you avoid the Carnivore diet. 


Because there are plenty of other diets which include a variety of foods which are more researched and shown to be both safe and effective. 

If, on the other hand, you are a Hashimoto's veteran and have been unable to find help in any of these diets in the past, then it may be worth exploring the Carnivore diet (but only for a limited time). 

Final Thoughts

Unlike other diets that I've discussed in the past, this is one diet that I've never recommended to my patients nor have tried myself. 

It doesn't mean that I'm necessarily opposed to it, but I would like to see a lot more information and research about it before I get to that point. 

But I would like to hear from you:

Have you tried the Carnivore diet or are you currently using it now?

Did you find it to be helpful for your thyroid or Hashimoto's?

How did it affect you?

Leave your questions or comments below so we can keep the conversation going. I'd love to know if any of you have tried it (or are thinking about trying it) and what your experience has been. 

References (Click to Expand)

can the carnivore diet be used to treat hashimoto's?

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About Dr. Westin Childs

Hey! I'm Westin Childs D.O. (former Osteopathic Physician). I don't practice medicine anymore and instead specialize in helping people like YOU who have thyroid problems, hormone imbalances, and weight loss resistance. I love to write and share what I've learned over the years. I also happen to formulate the best supplements on the market (well, at least in my opinion!) and I'm proud to say that over 70,000+ people have used them over the last 6 years. You can read more about my own personal health journey and why I am so passionate about what I do here.

P.S. Need more help? Check out my free thyroid downloads and resources.

17 thoughts on “Carnivore Diet for Hashimoto’s Thyroiditis: Does it Work?”

  1. I have Hashimotos and all the thyroid problems that go with it. I have tried many diets that have failed me, but I am currently eating Keto which is mostly meat and cheese for me. I feel SO much better. I highly recommend.

      • I have antibodies for both Hashimoto’s thyroiditis and Graves Disease. I also have other autoimmune issues. Following a very strict Carnivore diet of grass fed and finished meat, organs and water for nearly 14 months now and have come off most medications except for NDT and bioidentical hormone replacement. My TPO antibodies dropped from nearly 900 to 31. My ferritin dropped from well over 1000 to 392. My CRP now normal after 5 years of being off the charts. My IBD is completely under control and my last flare ended 6 weeks into the diet which was unbelievable for me and it cut my Fibromyalgia pain by more then half. Having Celiacs, I have always struggled with nutritional deficiencies and now my nutritional profile is on point and my doctor is thrilled with that. I am still healing and struggle with the Hashimoto side of things but I am so happy with the improvements. I ate a very low carb high fat diet for years then switched over to very strict keto for a few years. Because my autoimmunity continued to attack so violently and food sensitivity was off the charts I decided to try Carnivore at my doctors encouragement. Best decision for my health ever.

  2. I have had Hashimoto’s for many years and struggled with ups and downs, changes in the meds, etc. However, I have always known that a low carb diet works best for me. I can’t go long without eating meat, mostly red meat (chicken doesn’t do the same thing for me). So it’s great to hear this recommendation and it just confirms the Adkin’s diet from years ago. He was the pioneer 🙂 I would add though that today we need to stick with grass-fed meats as much as possible.

    • Hi Carla,

      I’m glad you found something that works for you! Just so I am clear, though, I am not necessarily recommending this diet, just offering potential theories as to why it may positively impact some people. I would certainly caution against using this diet, though, for the reasons stated in the article.

  3. I am on the keto diet and have found great benefits to it. I can certainly tell when I have overdone the carbs with the pain in my joints. When I do eat carbs though it is usually raspberries/blackberry etc. I also include above ground veg. Do not eat gluten like bread/pastry and all my meals are cooked from scratch. Very pleased with the results especially keeping my weight under control.

    • Hi Sharon,

      There’s definitely a certain type of person that tends to do well on the keto diet. It sounds like you might fit into that category. Thanks for sharing!

  4. I have Hashimoto’s and have had a difficult time losing a small amount of weight (8 lbs). I’ve done some research and decided to try the carnivore diet. I made it 2 days before I experienced pretty significant stomach cramps and was extremely bloated. I decided to continue as long as I could thinking that my digestive system just needed to recalibrate. The stomach cramps were the negative along with having no BM’s for 3 days, (didn’t necessarily feel constipated just felt that I didn’t have to go) feeling nauseous and feeling that the thought of eating more meat physically made me feel sick each day. As the few days went on, I had no appetite and by the end of the 4 days had 1 meal and was not hungry. I was mentally clear and sharp and slept very sound plus I have low anxiety which completely disappeared at the end of day 1. Days 3 and 4 I experienced pretty gnawing stomach cramps and diarrhea and I decided to stop. Since then I have decided to review my nutrition and protein intake and gradually added back in veggies but am continuing to add more protein back into my diet.

    • Hi Christina,

      Thanks for sharing your experience! It sounds like the complete diet didn’t work well for you but perhaps some variation would still benefit you.

  5. I agree. Since then I have added roughly 1/2 cup low carb veggies per day to my diet and that seems to have made a difference. This is truly bio individual!

  6. I’ve had Hashi’s for over 3 years. Tried every diet. Did strict AIP for 2 of those years. Still had significant bloat, digestive distress, pain, fatigue, brain fog. My husband came across carnivore. I thought it was crazy and went against everything I’d ever learned ( I’m an oncology nurse and science nerd when it comes to nutrition). I’d also come across Izabella Wentz’s suggestion that if you’d tried everything, had no results and had breast implants, you might want to consider removing them. I’d made a dumb choice 15 years earlier and had saline implants (even they have 40+ heavy metals and toxins!). So I removed them last November. My TPO dropped from 227 to 66 about 2 months after removal. Carnivore has taken me to the next level of healing. ALL of my pain is gone, I have more energy and brain fog definitely improved. I’ve been doing carnivore for 10 months and have lost the 15-20 lbs I could NOT lose on vegetarian or vegan ( absolute worst I ever felt),Paleo, Keto, AIP. It just melted off over a few months. In regards to cholesterol, there’s a bunch of hype out there propagated by big pharma and MD’s that are still using old science. Yep, my cholesterol went up to 255. But, all my numbers are great. Over 50% of those having heart attacks have a normal or low cholesterol. It is not a high cholesterol that causes heart disease, it’s inflammation. Cut out sugar and processed foods, throw in some fasting and most will cut their cardiac risk substantially. Thanks for your work. It’s important.

    • OMG thank you, I also had breast implants and decided to remove them as they caused me to develop Hashimotos. Its been 3 years since but I can’t seem to lose the 20lbs I gained. I have tried everything, except this.

  7. My thyroglobulin antibodies tested as being high (3.4 IU/mL) this January 2020 and my ferritin, iron and hemoglobin got low enough to give me shortness of breath and dizziness. My workplace cigarette smoke allergies were causing my nose to run and triggering a cough for several months. Not a good situation during the coronavirus craze and luckily no fever.

    I did the Carnivore Challenge with The Drs Wolfson in January and again in the beginning of June. My rotator cuff pain disappeared and my shortness of breath mostly resolved itself. My serum iron rose but my ferritin stayed the same. My TgAb went down to less than half of what it was in the beginning of the year (1.2 IU/mL).

    I found the Carnivore Challenge unpleasant and fell asleep in the middle of the day, taking unplanned naps twice a day for five days that I was on it. It felt like reduced T4 to T3 conversion, even with the T3 Conversion Booster. I ended the diet with the equivalent of Functional Fuel Detox protein powder, T3 Conversion Booster and Thytropin. After two weeks, I went for my thyroid lab tests, following Dr. Childs’ recommendations for optimal testing conditions – no biotin for a week, Day 7 of my menstrual cycle and no L-tyrosine. My Reverse T3 tested below 15 for the first time since 2011 while my free T4, free T3 and total T3 are in the low normal range. It’s probably because of the suboptimal iron.

    Carnivore Diet is effective for Hashimoto’s but my body acts like I’m on the ProLon fasting mimicking diet while doing it. I plan to avoid it and take iron supplements until my antibodies and ferritin improve. I hope Dr Child’s continues these blogs so that thyroid patients can continue to take charge of our own health.

  8. Can you please explain the difference in the impact of a keto diet versus carnivore diet? I’ve done both in the past. I’ve had Hashimoto’s for 23 years but haven’t been on any meds in over 6 months, as labs have come back normal lately. I need to lose some weight but I want to do it safety & not sabotage my thyroid(again) in the process. Thanks for all your good advice & information!

  9. I have Hashimoto’s…and have never been a person that feels good, nor has it ever been easy for me to lose/keep weight off…even with lifting, fasted cardio and “eating clean”…My hair started thinning out in my late 20s, I’m in my late 30s now and prior to my carnivore experiment, I could see my scalp when my hair was pulled back. I’ve been eating carnivore with intermittent fasting for 42 days now, weight is literally melting off, my hair is growing back, my skin and nails look amazing, my depression is gone, and most of all I FEEL GREAT. I’m not bloated anymore, my GI system seems to work so much more efficiently than it ever has. I don’t have cravings, or feel like I’m really missing out on anything. I did notice in the first 2-3 weeks I had a lot less energy as my body was adjusting…but that has resolved itself and my workouts are where they used to be. I highly recommend giving this a try if you suffer from Hoshimoto’s. Literally the only symptom that hasn’t resolved itself is the cold feet.


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