Study: Replenishing 3 Simple Nutrients Reversed Thyroid Dysfunction in 77% of Patients — Without Medication
Discover how research-backed vitamins A, D3, and K2 reactivate your thyroid hormone pathway, reduce antibodies, and help you reclaim energy, mood, and metabolism — naturally.
Discover how research-backed vitamins A, D3, and K2 reactivate your thyroid hormone pathway, reduce antibodies, and help you reclaim energy, mood, and metabolism — naturally.
Dear Thyroid Sufferer...
If you’re still exhausted, gaining weight, or battling brain fog — even on thyroid meds — there’s crucial nutrients you’re almost certainly missing.
And it’s not your fault. It’s been missing from the modern diet since the early 1900s.
In 1939, a brilliant dentist named Dr. Weston A. Price uncovered a “superfood” rich in three specific vitamins your thyroid cannot function without. These fat-soluble nutrients power nearly every step of the thyroid hormone process — from hormone production to cellular absorption.
Most doctors don’t mention it. But modern research (and ancient wisdom) show this missing piece could be the key to reversing hypothyroidism and Hashimoto’s — naturally.
You see, Dr. Price was the director of the American Dental Association’s Research Institute.
Even though tooth decay was prevalent at the time, he found it almost impossible to recreate tooth decay in his research studies by treating teeth with external factors.
That’s when the answer became clear.
If tooth decay wasn’t caused by external factors… then it must be caused by a deficiency.
Soon after, Dr. Weston A. Price set out on more than a decade-long research study to prove just that.
As part of his research, he traveled the world studying indigenous cultures, and discovered the difference between those who were still free of tooth decay and modern diseases, and those who were not.
He then published his findings and life’s work in 1939.
What he found might shock you.
He found that healthy indigenous cultures all ate one thing that was missing from modernized diets and is still missing from our diet today.
It was the modern day equivalent of a superfood.
Why Your Thyroid CAN'T Work Without These 3 Fat-Soluble Vitamins
More importantly, he was able to determine that this superfood was so effective because it was rich in three primary fat-soluble vitamins.
To prove his findings, Dr. Price began studying the effects of these three fat-soluble vitamins.
By using a healthy diet and concentrated forms of these three vitamins, Dr. Price was not only able to stop tooth decay, he was also able to reverse it.
Before I tell you what this superfood is, let me explain what these three fat-soluble vitamins are and how they can help you overcome your hypothyroidism.
You see, their effects on thyroid health are profound.
In fact, they are so profound that you would wonder why all doctors aren’t recommending this to their patients.
Unfortunately, doctors are in the business of dispensing medications, not foods or vitamins, and your thyroid health is needlessly suffering because of it.
Just wait until you see the studies.
This could revolutionize our approach to hypothyroidism and Hashimoto’s thyroiditis.
Yet, my goal is that you use this research, more than 85 years after Dr. Price published his work, to overcome your thyroid condition and get back to the happy and healthy you.
Dr. Weston A. Price didn’t know it at the time, but his discovery would also hold the key to unlocking one of the biggest factors needed to restore healthy thyroid function.
These three essential thyroid vitamins are Vitamins A, D3, and K2-MK4.
For example, we now know that adequate Vitamin A is not only essential for proper thyroid function... it’s required to support every step of your Thyroid Hormone Pathway.
If any part of your Thyroid Hormone Pathway becomes blocked, you’ll never be able to restore proper thyroid function... and Vitamin A is directly involved in every step.
This was outlined in a 2022 study published in the journal, Frontiers in Endocrinology, that described the relationship between vitamin A and thyroid disorders.
This study showed that adequate Vitamin A is needed for iodine uptake, the coupling of iodothyronines, and thyroglobulin synthesis... all of which are required for the production of thyroid hormone by your thyroid gland. [1]
Similarly, this study also showed that Vitamin A is necessary for your liver to convert your inactive T4 thyroid hormone into the active T3 form that your cells need. [1]
Transthyretin, an important thyroid hormone carrier protein, is dependent on Vitamin A [1]. This means that you also need Vitamin A to transport thyroid hormone to your cells that desperately need it.
Even the ability of thyroid hormone to bind to your cell receptors and enter your cells is dependent on Vitamin A [1].
Last but not least, studies also show that Vitamin A is necessary for the production of NAD+ within your mitochondria, which is essential for a healthy metabolism, and for your cells to produce energy [2].
Needless to say, without Vitamin A and these other fat-soluble vitamins, your thyroid doesn’t stand a chance, which is why this superfood is even more important now than ever.
Here's What Studies Show Happens When You Don't Get Enough of These Essential Thyroid Vitamins...
Unfortunately, tooth decay wasn’t the worst effect of these vitamin deficiencies.
Since Dr. Price’s research, more and more studies have detailed the dangerous effects of these vitamin deficiencies on your thyroid health.
As we always say...
If you can’t get the right thyroid hormone (active T3) to your cells or your cells can’t metabolize that thyroid hormone efficiently, then you will always be hypothyroid.
These vitamin deficiencies do just that.
It all starts with an increase in TSH (thyroid-stimulating hormone), which is what your doctor tests to diagnose you with hypothyroidism.
Yet, it’s not simply a matter of poor test results.
It activates your TSH-β gene expression that further drives TSH levels, causing your thyroid gland to swell and increasing your risk of goiter. [1]
In addition, your thyroid gland can’t produce adequate thyroid hormone and the levels in your blood begin to drop, leaving you with less thyroid hormone.
In fact, this Japanese study, published in the Journal of Nutrition Science and Vitaminology found that a deficiency slashed T4 thyroid hormone levels in half. [3]
From there, your liver suffers and struggles to convert what little T4 you do have into even less of the active T3 form of thyroid hormone your cells so desperately need.
You further struggle to deliver that little active T3 you do have to your cells because your transport proteins can’t carry it, leaving even less T3 available to your cells.
With even less T3 available to your cells, your cell receptors also struggle to uptake what little T3 is available into your cells, leaving less and less T3 available for your cells to use.
With each step of the pathway becoming blocked you’re left with less, and less, and less of the active T3 thyroid hormone you need.
Then, we have the icing on the cake.
These deficiencies also prevent your cells from using thyroid hormone efficiently, leaving you less able to use what miniscule T3 is remaining.
In short, these deficiencies are draining your body of the thyroid hormone it so desperately needs, and making it even more difficult for you to use what little you do have.
But think about it...This process affects every single cell in your body.
It affects metabolism leading to unwanted weight gain, water retention, and chronic fatigue.
Yet, it also affects your brain leading to brain fog, mood issues, depression, insomnia, and more...
It also affects your digestive tract leading to constipation, bloating, bacterial overgrowth, heartburn/reflux, gallstones, and more...
Imagine what it’s doing to your heart, kidneys, etc.
It cripples every organ inside your body.
It’s no wonder that studies show hypothyroidism increases your risk of early death by 52%. [4]
If you think your thyroid medication is going to save you, think again.
Studies show that T4-treated thyroid patients still remain at risk of early death. [5]
And to make matters worse...
Numerous studies have demonstrated that these deficiencies wreak havoc on your immune system.
They increase the production of your anti-thyroid antibodies that cause Hashimoto’s thyroiditis [1] which can cause permanent damage to your thyroid gland.
This is one of the reasons that Hashimoto’s thyroiditis is the most common form of hypothyroidism today.
Nobody deserves to go through this.
You’ve invested a lot into your life.
You shouldn’t have to worry about whether you’re going to live long enough to see your grandchildren get married.
Needless to say, it simply doesn’t make sense to continue to ignore this, when the answer is so simple.
How 1 Long-Forgotten Superfood Can Help Fix It All
The good news is that there’s also research showing the profound effects of replenishing these thyroid essential vitamins.
For example, a 2012 study published in the Journal of the American College of Nutrition, showed that replenishing Vitamin A resulted in significant improvement in thyroid function.
Not only did thyroid gland function improve with a 30-33% reduction in TSH… [6]
The conversion of thyroid hormone by the liver improved significantly, resulting in a 38-61% increase in active T3 thyroid hormone. [6]
These results were achieved with zero medication.
What’s more, a 2017 study published in the journal Endocrine, showed that replenishing Vitamin D resulted in even more significant improvements.
They also found improved thyroid gland function resulting in a 58% reduction in TSH levels and an increase in both T3 and T4 thyroid hormone levels. [7]
Yet, get this...
After follow up testing, the researchers discovered that this alone reversed hypothyroidism in 77% of study subjects. [7]
Again, these results were achieved with zero medication.
And 69% of those suffering from Hashimoto’s thyroiditis experienced a complete reversal of their antibodies. [7]
But, that’s not even the best part.
Every single major thyroid symptom measured improved…[7]
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52% less risk of fatigue.
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90% less risk of weight gain.
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36% less risk of sleep problems.
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20% less risk of brain fog.
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38% less risk of mood issues.
Yet, these results shouldn’t be surprising...
The idea that food can help treat and prevent disease has been around much longer than the early 1900’s and Dr. Weston A. Price’s research.
The ancient Greek physician, Hippocrates, who today is referred to as the “Father of Modern Medicine”, knew this when he famously stated...
“Let food be thy medicine...”
That’s not to say that thyroid medication doesn’t have its place.
Hippocrates, Dr. Price, and countless other doctors were simply saying that you need to take care of the simple basic things first.
By simply getting adequate amounts of these 3 essential thyroid nutrients, you may end up like one of those 77% of study participants who reversed their thyroid condition.
You might see a complete reversal in thyroid antibodies and Hashimoto’s thyroiditis.
You might see significant improvement in your thyroid symptoms.
You might just be kicking yourself for not doing this sooner.
While I encourage you to utilize this missing superfood... I’m also happy to report that today you don’t even have to.
There’s an even easier way to get these 3 essential thyroid nutrients, which I’ll explain in a second.
Before I do, let’s circle back to Dr. Price and his research.
Dr. Price discovered that the diets of the healthiest indigenous cultures all included organ meats like liver.
In fact, he found that these organ meats were coveted for their nutrient density and were extremely protected by these groups.
We also see this occur naturally throughout the animal kingdom.
Studies show that many animals hunt and then selectively feed on the organs first. [8]
Our modern day diet has simply become unaccustomed to these foods, and it’s costing us our thyroid health.
The good news is... you don’t have to consume liver, or other organ meats, if you prefer not to.
In fact, I’ll explain why you might not want to in a second.
Yet, Dr. Weston A. Price was able to create concentrated forms of these vitamins for his patients, which worked just as well.
That’s why we set out to do the same...
We created a special formula combining the powerful and synergistic effects of these 3 essential thyroid vitamins.
The Road to Restoring Your Thyroid Health Is Changing...
There’s no denying it...
The traditional thyroid medical treatment isn’t working for most thyroid sufferers like yourself.
In fact, this is clearly outlined in this 2016 study published in the The Journal of Clinical Endocrinology & Metabolism.
Remember... it all comes down to your Thyroid Hormone Pathway.
If you can’t get the right thyroid hormone (active T3) to your cells or your cells can’t metabolize that thyroid hormone efficiently, then you will always be hypothyroid.
This study found that traditional T4-treated patients still have lower active T3 thyroid hormone levels because they can’t convert their medication into the usable T3 form.
What’s more, T4-treated patients are still more likely to be overweight despite eating less, and are more likely to be taking blood pressure, cholesterol, and antidepressant medications.
Why?
Because you’re still not getting the nutrients you need to support the complete solution.
Simply put, it won’t matter how much medication you take.
If you can’t convert your medication...
If you can’t deliver it to your cells...
If your cells can’t accept it...
If your cell can’t use it...
You’ll forever struggle with your thyroid condition.
Yet, every day doesn’t have to be a struggle.
You can put an end to this life-draining condition and change your life for good.
Just as Dr. Weston A Price’s research, and countless other studies have demonstrated...
Restoring these 3 essential thyroid vitamins is key.
That’s why we developed a special formulation based on this research.
It’s a supplement we’ve been using with our clients for years, and it can help to reactivate your Thyroid Hormone Pathway and ultimately help give you your life back.
Doctor Recommended, No Prescription Required, and Easy to Use With Your Medication...
Let’s face it.
We wish all doctors were aware of this research and were educating their patients on how to use it to make a real difference with their thyroid health.
Yet, as I’m writing this, more than 690 medical doctors are now recommending this exact supplement to their patients, and that number is climbing every day.
And the best part is it doesn’t require a prescription.
In fact, it’s a dietary supplement designed to “supplement” your current thyroid regimen.
It’s NOT designed to replace your thyroid medication, but rather to be used WITH it, or by itself if you’re not currently taking thyroid medication.
This Isn't Your Store-Bought MultiVitamin
It’s important not to confuse this with a multivitamin.
It’s much more.
Unfortunately, most multivitamins don’t contain real usable forms of these vitamins.
For example, most multivitamins use beta-carotene as their source of Vitamin A.
It’s the same with eating carrots, which are rich in beta-carotene too.
Beta-carotene is a “provitamin A”, which means that your body still has to convert it into real Vitamin A before you can use it.
Unfortunately, thyroid sufferers can’t properly convert it [10], which causes it to build up in the body, further suppressing thyroid function, and eventually leading to the yellowish/orangish pigment of the skin, called carotenemia, that’s common in hypothyroidism.
To make matters worse, excess beta-carotene has been shown to block some of the actions of real Vitamin A. [11]
Also take Vitamin K for example.
Most multivitamins don’t contain any form of Vitamin K. Those that do, contain the wrong form and in doses that are ineffective.
You need it in the form of Vitamin K2-MK4, which is extremely expensive, especially in the therapeutic doses you need.
This isn’t something you’ll find in any multivitamin.
Even More Sunlight Won't Help Your Vitamin D Levels...
We all know that sunlight is important to support Vitamin D levels.
What you might not know is that sunlight by itself isn’t enough.
In 2018, a group of researchers set out to better understand how those with thyroid disease could achieve adequate Vitamin D levels.
What they discovered was eye opening.
They found that those suffering from thyroid disease have impaired Vitamin D production and that it was impossible to get their Vitamin D levels high enough using sunlight alone, even during peak summer months. [12]
What’s more, the only way these thyroid sufferers were able to get the Vitamin D they needed was through proper supplementation.
Make Your Road to Restoring Your Thyroid Health As Short and Smooth As Possible...
While there are no quick-fix solutions when it comes to your thyroid health, this is truly as easy as it gets.
No matter your age, lifestyle, or severity of your thyroid condition, it’s easy enough for anyone to use.
In fact, here's why you're going to love our Vitamin ADK Thyroid Formula...
Boost Thyroid Hormone (T3)
Vitamin ADK can help increase active thyroid hormone levels by up to 61% so you can feel renewed and full of life.
Support Thyroid Function
Vitamin ADK can help decrease TSH by up to 33% so you and your thyroid don’t have to work so hard to keep up.
Restore Youthful, Healthy Skin
Vitamin ADK can help decrease the shedding of skin cells to keep your skin soft, clear (acne-free), young, healthy, and glowing.
Restore Bone & Joint Health
Vitamin ADK can help keep calcium in your bones where it belongs to keep them strong and healthy and your joints pain-free.
Protect Against Hashimoto's Thyroiditis
Vitamin ADK can help decrease Hashimoto’s TPO-antibodies by 46.7% to protect you and your thyroid from autoimmune disease.
Boost Immunity & Alleviate Allergies
Vitamin ADK can help increase SIgA levels to bolster your immune system to alleviate allergies and protect you from infection.
Imagine waking up feeling rested... and having the all-day energy needed to tackle everything your day throws at you.
Imagine feeling calm, collected, and relaxed, and having the mental clarity to juggle all of your daily priorities.
Imagine your glowing complexion helping you to look as good on the outside as you feel on the inside.
Imagine having a bulletproof immune system that allows you to spend less time being sick and more time doing what you love with your loved ones.
Imagine going to your doctor and finally seeing the positive results you’ve hoped for.
Imagine you’ve regained control over your thyroid health, and you’re no longer feeling trapped by your thyroid condition.
That’s what happened for Amy and Laura.
And it can happen for you too.
"I’ve been taking this for over 6 months now and it works great! I have no stomach upset using this product; other **** supplements have caused upset stomach. Since using Forefront products, I feel life changing benefits including decrease in thyroid symptoms including relief of joint pain and thyroid pain. I recommend it!"
—Amy P., Vitamin ADK Thyroid Formula Customer
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"I love how easy it is to use this supplement, 7 drops 3 times a day, instead of swallowing numerous pills! This along with the other Forefront supplements I use are making a such a huge difference in my body! Energy levels have increased, anxiety has lessened, and sleep is better! Thank you, Forefront Health!"
—Laura P., Vitamin ADK Thyroid Formula Customer
A Lot Goes Into An Essential Thyroid Vitamin Solution You Can Trust...
PATIENT RECOMMENDED & DOCTOR APPROVED
Why do so many doctors trust us and our products?
Needless to say, we do our research, and we formulate all of our products based on that research. That’s why we’re considered the thyroid experts. Yet, it goes far beyond that. You see, we not only formulate our own products... We also prove their effectiveness by using them with our own clients. So, what we teach is also based on clinical experience.
MADE IN THE USA IN A GMP COMPLIANT FACILITY
We would never take chances with our own thyroid health... and we certainly wouldn’t take any chances with yours. That’s why we built a lab right in the heart of Boulder, Colorado (USA) where we make this essential thyroid vitamin solution for you.
ONLY 4 HIGH QUALITY & SAFE INGREDIENTS
Our Vitamin ADK Thyroid Formula contains only four safe and highly effective ingredients (Vitamin A, D3, and K2-MK4 dissolved in a healthy and nutritious MCT (coconut) oil base.)
NO HIDDEN INGREDIENTS OR HARMFUL FILLERS
There are absolutely no hidden ingredients or harmful fillers. So, you can rest easy knowing that you and your thyroid are getting the best and safest care possible.
Plus, It's Very Easy to Use and Saves You Money...
Consider this...
Before we formulated this supplement, our clients were paying more than $110 to purchase all three of these essential thyroid vitamins separately.
By combining them into one simple and effective formula, we were able to help them save more than 60% of that cost.
Plus, it removes all the guesswork by providing these three essential thyroid vitamins in the ideal ratios for your thyroid health.
And it only takes 60 seconds... just 7 drops, 3 times daily.
It’s one of the biggest boosts to your thyroid health with the least amount of effort.
All you have to do is lift a few fingers.
See What Other Thyroid Sufferers Have to Say...
Vitamin ADK Thyroid Formula... Formulated to Solve One of the Biggest Problems that Thyroid Sufferers Face Today
Simply put, if you can’t convert your inactive T4 thyroid medication into the good active T3 form your cells need, and get it to your cells... you’ll always be hypothyroid.
With the help of Dr. Weston A. Price’s research, and countless others since, we now understand the importance of these three essential thyroid vitamins to thyroid health.
While we still recommend liver to our clients, most can’t tolerate the taste. Those who can tolerate it, often can’t find it fresh enough to be safe to consume.
That’s why we had to come up with a better solution for our clients.
And that’s why from this research, we formulated a safe, clean, and highly effective Vitamin ADK Thyroid Formula supplement that is made right here in the USA, using only the best ingredients.
You probably haven’t tried a thyroid-formulated vitamin like this before. Or at least not one of this quality.
That’s why I have a deal for you today.
We know you’re going to love this Vitamin ADK Thyroid Formula. After you start to look and feel like your real self again, you’ll never want to be without it.
So, today, you can get up to three full bottles of Vitamin ADK Thyroid Formula for up to 50% Off.
This is for new customers only. Limit one order per household.
Why up to three bottles?
You didn’t become hypothyroid overnight, and we certainly don’t want to give you the impression that it can be reversed that quickly either.
These studies suggest that it can take 3 to 6 months of continuous use to achieve full results.
Each bottle is designed to last you for 2 months.
So, while most of our clients do feel initial improvements within the first week or two, we recommend starting with at least two to three bottles to give yourself adequate time to experience the full results.
It’s time to put yourself on the right path back to thyroid health, and get back to the happy and healthy you.
Just don’t blame us that you didn’t find this sooner.
We can’t wait to hear about how it has transformed your life like it has for thousands of others.
This Special Offer Expires In:
GET UP TO 50% OFF YOUR FIRST ORDER WHILE SUPPLIES LAST
Current Status: In stock. Your order will ship within 1 business day.
Choose the Best Option For Your Thyroid
"See changes in just a couple weeks!"
I have only been using this product for a couple weeks but am already feeling better. Getting back to my normal self. Can't wait to continue to use and see good results!
— Susanne L., Vitamin ADK Thyroid Formula Customer
"I had forgotten what it felt to be normal!"
I love, love how good I feel now that my body is not in so much pain every morning like before. Your products are a life line for me and a very big part of my everyday function, Thanks so much!!!
—Jael A.., Vitamin ADK Thyroid Formula Customer
"I have tested as completely normal"
I was diagnosed at 15 with Hashimotos Thyroiditis and now at age 51 I have tested as completely normal in terms of thyroid function. I think taking a natural approach has definitely helped in healing. I feel this supplement has also been a great addition to my routine.
—Kim M., Vitamin ADK Thyroid Formula Customer
"Obviously works"
I took the 7 drops three times daily for about 2 weeks, and felt better overall. Then, our schedule got crazy and I forgot to take it as often, even forgetting a couple of days. Started feeling run down and moody again. It's amazing what a big difference a few little drops can make!
—Jennifer D., Vitamin ADK Thyroid Formula Customer
Help Advance the Education of Thyroid Health...
When you use Forefront Health Vitamin ADK Thyroid Formula, you’re doing more than just transforming your thyroid health.
You’re helping to support a mission to advance the education of thyroid health. One of our goals is to help build awareness about the true severity of hypothyroidism and the silent epidemic it has become. The more we educate and the more awareness we build, the louder we become, helping to give a voice to all thyroid sufferers.
Modern medicine can’t continue to ignore this research forever. Not if you don’t let them.
You Have Everything to Gain and Nothing To Lose...
What if Vitamin ADK Thyroid Formula isn’t for you? Regardless of what the research shows, we don’t want you to order anything that you aren’t 100% happy with.
Therefore, we have a 30 Day 100% money-back guarantee. So, if you aren’t seeing positive results, please reach out and we’ll gladly offer you our expert help to ensure that you’re on the right track. If at any time you’re still not happy, just let us know and we’ll be happy to refund you.
We are proud to have incredibly loyal customers and clients who love our Vitamin ADK Thyroid Formula and we’re confident that you will too. But rest assured, you are covered by our 100% money back guarantee.
I can’t wait to see the happy and healthy you.
Talk to you soon,
Tom Brimeyer, MSc
Founder of Forefront Health
Frequently Asked Questions...
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For best results, we recommend 7 drops, 3 times daily with food.
Can’t make it three times daily? No problem. Simply divide the total drops over the number of times you can take it, i.e. 11 drops twice daily or 21 drops once daily.
1. Capriello, S et al. “The relationship between thyroid disorders and vitamin A.: A narrative minireview.” Frontiers in endocrinology vol. 13 968215. 11 Oct. 2022, doi:10.3389/fendo.2022.968215
2. Chiu, Haw-Jyh et al. “Vitamin A depletion causes oxidative stress, mitochondrial dysfunction, and PARP-1-dependent energy deprivation.” FASEB journal : official publication of the Federation of American Societies for Experimental Biology vol. 22,11 (2008): 3878-87. doi:10.1096/fj.08-112375
3. Oba, K, and S Kimura. “Effects of vitamin A deficiency on thyroid function and serum thyroxine levels in the rat.” Journal of nutritional science and vitaminology vol. 26,4 (1980): 327-34. doi:10.3177/jnsv.26.327
4. Thvilum, Marianne et al. “Excess mortality in patients diagnosed with hypothyroidism: a nationwide cohort study of singletons and twins.” The Journal of clinical endocrinology and metabolism vol. 98,3 (2013): 1069-75. doi:10.1210/jc.2012-3375
5. Sohn, Seo Young et al. “Risk of All-Cause Mortality in Levothyroxine-Treated Hypothyroid Patients: A Nationwide Korean Cohort Study.” Frontiers in endocrinology vol. 12 680647. 13 May. 2021, doi:10.3389/fendo.2021.680647
6. Farhangi, Mahdieh Abbasalizad et al. “The effect of vitamin A supplementation on thyroid function in premenopausal women.” Journal of the American College of Nutrition vol. 31,4 (2012): 268-74. doi:10.1080/07315724.2012.10720431
7. Mirhosseini, Naghmeh et al. “Physiological serum 25-hydroxyvitamin D concentrations are associated with improved thyroid function-observations from a community-based program.” Endocrine vol. 58,3 (2017): 563-573. doi:10.1007/s12020-017-1450-y
8. Kohl, Kevin D et al. “Do wild carnivores forage for prey or for nutrients? Evidence for nutrient-specific foraging in vertebrate predators.” BioEssays : news and reviews in molecular, cellular and developmental biology vol. 37,6 (2015): 701-9. doi:10.1002/bies.201400171
9. Peterson, Sarah J et al. “Is a Normal TSH Synonymous With "Euthyroidism" in Levothyroxine Monotherapy?.” The Journal of clinical endocrinology and metabolism vol. 101,12 (2016): 4964-4973. doi:10.1210/jc.2016-2660
10. Farasati Far, Bahareh et al. “Is beta-carotene consumption associated with thyroid hormone levels?.” Frontiers in endocrinology vol. 14 1089315. 26 May. 2023, doi:10.3389/fendo.2023.1089315
11. Eroglu, Abdulkerim et al. “Naturally occurring eccentric cleavage products of provitamin A β-carotene function as antagonists of retinoic acid receptors.” The Journal of biological chemistry vol. 287,19 (2012): 15886-95. doi:10.1074/jbc.M111.325142
12. Kmieć, Piotr et al. “Vitamin D status including 3-epi-25(OH)D3 among adult patients with thyroid disorders during summer months.” Endokrynologia Polska vol. 69,6 (2018): 653-660. doi:10.5603/EP.a2018.0065
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