Is a Low Vitamin D Level Affecting Your Thyroid?

Dr. Shannon Evans, DO, IFMCP • July 16, 2020

Vitamin D deficiency is when your vitamin D level is too low. Unfortunately, it is very common and affects over a billion people worldwide. Yet, vitamin D levels are not commonly checked. Why is this the case? One barrier, is that most health insurance companies will not cover the cost to check a vitamin D level.


Why is Vitamin D so important?

Vitamin D has many important roles in helping your body function properly!

Vitamin D plays a significant role in several of your immune functions:


    • Vitamin D plays a role in numerous effects on your cells within the immune system including lessening the production of inflammation within the body.
    • Studies show that vitamin D plays a significant role in reducing the likelihood of autoimmune disease such as Hashimoto’s and Grave’s disease (auto immune thyroid disease) likely due to decreasing the production of inflammation.


Vitamin D is also beneficial for:


    • Bone and muscle development
    • Calcium absorption
    • Boost mood and energy levels


What are some symptoms individuals experience with a Low Vitamin D level?


    • Tired or sluggish
    • Bone pain
    • Muscle weakness, aches or cramps
    • Decreased mood or depression
    • Symptoms of a Low Thyroid: feeling sluggish, having brain fog, hair loss, trouble losing weight, decreased mood and constipation to name a few.


What exactly is Vitamin D?

It is a fat-soluble vitamin that can be produced endogenously when UV rays from the sunlight strike the skin and can trigger vitamin D synthesis. There are also a few foods that contain some vitamin D such as cod liver oil, trout, salmon and mushrooms. Vitamin D has to be converted to an active form for our bodies to recognize and use it. First, your liver converts the vitamin D to 25-hydroxyvitamin D and then your kidneys change this form of vitamin D to 1,25-dihydroxyvitamin D so that your body can recognize and use it.


How do you know if you are low in Vitamin D?

A blood test can determine if your body is low in vitamin D. Per The National Institute of Health, the best indicator of vitamin D status is to obtain a blood test called a 25-hydroxy vitamin D level. Other labs that may also be helpful are calcium, ionized calcium and parathyroid hormone levels depending on an individual’s health journey.

Every organization has a different idea of the number that defines vitamin D deficiency when interpreting lab results.

From a functional medicine perspective, the goal is to have an optimal level of vitamin D. For most people, the goal is to have a vitamin D level between 50-80 ng/mL.

If you are living at high altitudes in a place that is colder in the winter, your vitamin D level is likely going to be lower in the winter months due to having less sun exposure.

Most people need to supplement with vitamin D. How do you know how much to supplement? First, you need to determine your level with a blood test. You may need less vitamin D supplementation in the summer and more in the winter—depending on where you live.

As with anything, balance is key. Being low in vitamin D is not good, but also having too high of a vitamin D level is not good either. When vitamin D levels are too high, it can cause toxicity! Remember, vitamin D can be stored in the body! If vitamin D levels are too high it can cause many problems. These problems include: weight loss, weakness, poor appetite, nausea, vomiting, not feeling hungry, rhythm issues with the heart that can lead to heart disease. For this reason, it is important to evaluate your vitamin D levels regularly!



If you are concerned about your vitamin D levels, have known thyroid issues or have symptoms of a low thyroid, don’t forget about having your vitamin D level checked.


Are you concerned about your vitamin D status or your thyroid health? Not sure what your vitamin D level is? Need a partner in finding the root cause of your symptoms or disease? Schedule a FREE 15 minute consult with New Beginnings Functional Medicine Clinic. Email: Staff@NewBeginningsFMC.com or call 970-305-0101.





References:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3921055/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5618598/

https://www.sciencedirect.com/science/article/abs/pii/S1568997214002201

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4158648/

https://www.degruyter.com/view/journals/jpem/25/5-6/article-p467.xml

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4439962/

https://ods.od.nih.gov/factsheets/VitaminD-HealthProfessional/?print=1

https://my.clevelandclinic.org/health/articles/15050-vitamin-d--vitamin-d-deficiency

By Dr. Shannon Evans, DO, IFMCP June 13, 2025
I am sure you know that diabetics pay close attention to their blood sugar or blood glucose levels. In my opinion, I think everyone should know if their blood sugar is balanced or not! First off, let’s talk about what your blood sugar level is: A blood sugar level or otherwise known as blood glucose is the amount of sugar or glucose in your blood. Sugar comes from carbohydrates in food and drinks you put into your body. Sugar or glucose is your body’s main source of energy. Your blood can carry sugar all over your body. Your liver can also release stored glucose, if your body needs some energy. How does your liver get glucose? Your liver can get the glucose you ate from your gut, specifically your intestines and then stores it. Your liver does so many important things and this is just one of many! What are the benefits to having a continuously balanced blood sugar level? •Great way to help with optimizing your health and healing your body! •Steady energy throughout the day. •Better focus and memory •Stable mood •Better sleep •Hormone balance including adrenals, thyroid and sex hormones •Stress resilience •Nervous system more balanced and less likely to be stuck in fight or flight mode •Organs functioning optimally •Optimal metabolism •Less inflammation •Improved immune function •Better resilience Testing to find out about your blood sugar level: 1- Finger stick test . You get a drop of blood from your finger, put the drop of blood on a test strip, then put the test strip in the glucose meter and within seconds you find out what your blood glucose is at that current point in time. 2- Lab draw taken from your vein . This also tells you at the current time what your blood sugar level is. This is more accurate than a finger stick test. 3- Hemoglobin A1c test . This can be obtained with a lab draw or finger stick test. This tells you what your average sugar level is for a 3 month period. What we are looking for with this test is how much sugar is hanging off of your red blood cells and this will give you a clue about your average sugar level for a 3 month period. For the typical person, your red blood cells last a total of 3 months in your body. 4- Continuous glucose monitor . You wear a sensor this is usually placed on the back of your arm for ~10-14 days to continuously measure your sugar level 24/7 using an app on your phone or a reader. What are the drawbacks to each test: 1-Finger stick test is not always accurate and is only giving you a one time snap shot of what your sugar level is doing currently. 2-Lab draw is pretty accurate but is also only giving you a one time snap shot of what your sugar level is doing currently. 3-Hemoglobin A1c test. It sounds like a great test because you are getting info about a three month period. But the problem is, you are getting the average, you are not seeing if there are highs or lows. 4-CGM (continuous glucose monitor). Not always accurate. Sensors sometimes malfunction. Certain things can throw off the readings such as going thru a metal detector, laying on your arm that has the sensor or being in a hot environment like a sauna, hot tub or bath. What is the best way to see if your blood sugar level is balanced? With the technology that is currently available, I am a big fan of continuous glucose monitors . This is a way we can get the most thorough data about what your sugar level is doing 24/7 for 10-14 days. You will be able to see if your blood sugar is actually balanced 24/7. This means you don’t want to see ups and downs. You want your blood sugar to be balanced—as close to a straight line as possible 24/7. You will also be able to see if certain foods raise your blood sugar. Guess what? In conventional medicine there is a list of foods that are suppose to increase your sugar level. What I have found partnering with patients and looking at their data from their CGMs is that every one is unique and an individual and responds differently to different foods. You will find out what foods increase your blood sugar levels. You will also be able to see how your body responds to simple and complex carbohydrates. For a lot of people, if you don’t have protein and some fat before eating carbs, this can also raise your blood sugar level and put your sugar level out of balance. The amount of carbs also matter. Some people can get away with eating more carbs than others. You will also get the answer about how much your body likes in terms of carbs. You will also get to see if you have any symptoms or your body feels a certain way, if you have low blood sugars or high blood sugars. In conventional medicine, there is a list of symptoms for low and a certain list of symptoms for high blood sugars—but guess what? You are an individual and unique, so your symptoms maybe different than what the “typical symptoms” are. If your body feels stressed, this also affects your blood sugar level. So if you get stressed or angry at someone, you will likely see your blood sugar level increase. If you are exercising too hard and it is too stressful on your body, you can also see an elevation in your sugar level. You may also not feel when you are high or low. What does having a balanced blood sugar look like based on the numbers? Conventional Medicine has outlined what the criteria is for blood sugar numbers that are in prediabetic range or diabetic range, which is helpful. My goal for you is to work towards optimal range for blood sugar levels and have a balanced blood sugar level 24/7, so your body can work optimal! Here is what I have found to be the best ranges for an optimal blood sugar level after working with patients over the years: Fasting blood sugar: 80’s to mid 90’s mg/dL. For some individuals, mid 70’s is optimal. After eating blood sugar or post prandial blood sugar level: I have found that the most optimized patients with a balanced blood sugar level increase their blood sugar no more than 10 mg/dL from their pre-meal blood sugar level. It is okay to have blood sugar level highest before bed even up to 100, since you will not be eating all night and don’t want your blood sugar level plummeting while sleeping. Studies are currently being conducted to figure out what the optimal levels of blood glucose levels should be. It has only been in the last few years that continuous glucose monitors have been available for non-diabetic patients, so as we learn more and continue to conduct more studies, eventually we will have better evidence and wisdom. What the current studies are showing is that optimal levels for fasting blood glucose should be less than 110 mg/dL and after eating the blood sugar should not increase more than 30 mg/dL from pre-meal blood sugar level. Just like everything in life, you don’t want too little or too much when it comes to your blood sugar level—you want it in balance! Are you concerned about your health or a loved one's health and not sure where to begin? Schedule a FREE 15 minute strategy call with New Beginnings. Schedule online or call 970-305-0101. References: https://my.clevelandclinic.org/health/diagnostics/12363-blood-glucose-test https://pmc.ncbi.nlm.nih.gov/articles/PMC5293555/ https://www.ncbi.nlm.nih.gov/books/NBK555976/ https://www.levels.com/blog/what-should-my-glucose-levels-be-ultimate-guide
By Dr. Shannon Evans, DO, IFMCP May 17, 2024
Learn about the benefits to topical castor oil
By Dr. Shannon Evans, DO, IFMCP June 5, 2023
Are you taking time to support your body in detoxing? Learn what organs are key to detoxing and how to support successful detoxing.
By Dr. Shannon Evans, DO, IFMCP October 1, 2021
Learn steps to decrease symptoms & optimize your health!
By Dr. Shannon Evans, DO, IFMCP July 5, 2021
Is Your Sunscreen toxic? Learn about the top three ingredients to stay away from when buying sunscreen!
By Dr. Shannon Evans, DO, IFMCP April 23, 2021
Is an under active thyroid causing your high cholesterol?
By Dr. Shannon Evans, DO, IFMCP January 5, 2021
Information on mRNA vaccinations based on clinical trials from Moderna and Pfizer. Also information from the CDC.
By Dr. Shannon Evans, DO, IFMCP November 13, 2020
LDN can be helpful to balance out a ticked off immune system
By Dr. Shannon Evans, DO, IFMCP October 6, 2020
Struggling with sluggish, mood swings, PMS or weight gain? These can be symptoms of estrogen dominance. Learn 5 ways to balance your estrogen.
By Dr. Shannon Evans, DO, IFMCP August 16, 2020
Learn simple steps to achieving better sleep, finding your calm and reducing stress.
More Posts

Dr. Shannon's Blog

By Dr. Shannon Evans, DO, IFMCP June 13, 2025
I am sure you know that diabetics pay close attention to their blood sugar or blood glucose levels. In my opinion, I think everyone should know if their blood sugar is balanced or not! First off, let’s talk about what your blood sugar level is: A blood sugar level or otherwise known as blood glucose is the amount of sugar or glucose in your blood. Sugar comes from carbohydrates in food and drinks you put into your body. Sugar or glucose is your body’s main source of energy. Your blood can carry sugar all over your body. Your liver can also release stored glucose, if your body needs some energy. How does your liver get glucose? Your liver can get the glucose you ate from your gut, specifically your intestines and then stores it. Your liver does so many important things and this is just one of many! What are the benefits to having a continuously balanced blood sugar level? •Great way to help with optimizing your health and healing your body! •Steady energy throughout the day. •Better focus and memory •Stable mood •Better sleep •Hormone balance including adrenals, thyroid and sex hormones •Stress resilience •Nervous system more balanced and less likely to be stuck in fight or flight mode •Organs functioning optimally •Optimal metabolism •Less inflammation •Improved immune function •Better resilience Testing to find out about your blood sugar level: 1- Finger stick test . You get a drop of blood from your finger, put the drop of blood on a test strip, then put the test strip in the glucose meter and within seconds you find out what your blood glucose is at that current point in time. 2- Lab draw taken from your vein . This also tells you at the current time what your blood sugar level is. This is more accurate than a finger stick test. 3- Hemoglobin A1c test . This can be obtained with a lab draw or finger stick test. This tells you what your average sugar level is for a 3 month period. What we are looking for with this test is how much sugar is hanging off of your red blood cells and this will give you a clue about your average sugar level for a 3 month period. For the typical person, your red blood cells last a total of 3 months in your body. 4- Continuous glucose monitor . You wear a sensor this is usually placed on the back of your arm for ~10-14 days to continuously measure your sugar level 24/7 using an app on your phone or a reader. What are the drawbacks to each test: 1-Finger stick test is not always accurate and is only giving you a one time snap shot of what your sugar level is doing currently. 2-Lab draw is pretty accurate but is also only giving you a one time snap shot of what your sugar level is doing currently. 3-Hemoglobin A1c test. It sounds like a great test because you are getting info about a three month period. But the problem is, you are getting the average, you are not seeing if there are highs or lows. 4-CGM (continuous glucose monitor). Not always accurate. Sensors sometimes malfunction. Certain things can throw off the readings such as going thru a metal detector, laying on your arm that has the sensor or being in a hot environment like a sauna, hot tub or bath. What is the best way to see if your blood sugar level is balanced? With the technology that is currently available, I am a big fan of continuous glucose monitors . This is a way we can get the most thorough data about what your sugar level is doing 24/7 for 10-14 days. You will be able to see if your blood sugar is actually balanced 24/7. This means you don’t want to see ups and downs. You want your blood sugar to be balanced—as close to a straight line as possible 24/7. You will also be able to see if certain foods raise your blood sugar. Guess what? In conventional medicine there is a list of foods that are suppose to increase your sugar level. What I have found partnering with patients and looking at their data from their CGMs is that every one is unique and an individual and responds differently to different foods. You will find out what foods increase your blood sugar levels. You will also be able to see how your body responds to simple and complex carbohydrates. For a lot of people, if you don’t have protein and some fat before eating carbs, this can also raise your blood sugar level and put your sugar level out of balance. The amount of carbs also matter. Some people can get away with eating more carbs than others. You will also get the answer about how much your body likes in terms of carbs. You will also get to see if you have any symptoms or your body feels a certain way, if you have low blood sugars or high blood sugars. In conventional medicine, there is a list of symptoms for low and a certain list of symptoms for high blood sugars—but guess what? You are an individual and unique, so your symptoms maybe different than what the “typical symptoms” are. If your body feels stressed, this also affects your blood sugar level. So if you get stressed or angry at someone, you will likely see your blood sugar level increase. If you are exercising too hard and it is too stressful on your body, you can also see an elevation in your sugar level. You may also not feel when you are high or low. What does having a balanced blood sugar look like based on the numbers? Conventional Medicine has outlined what the criteria is for blood sugar numbers that are in prediabetic range or diabetic range, which is helpful. My goal for you is to work towards optimal range for blood sugar levels and have a balanced blood sugar level 24/7, so your body can work optimal! Here is what I have found to be the best ranges for an optimal blood sugar level after working with patients over the years: Fasting blood sugar: 80’s to mid 90’s mg/dL. For some individuals, mid 70’s is optimal. After eating blood sugar or post prandial blood sugar level: I have found that the most optimized patients with a balanced blood sugar level increase their blood sugar no more than 10 mg/dL from their pre-meal blood sugar level. It is okay to have blood sugar level highest before bed even up to 100, since you will not be eating all night and don’t want your blood sugar level plummeting while sleeping. Studies are currently being conducted to figure out what the optimal levels of blood glucose levels should be. It has only been in the last few years that continuous glucose monitors have been available for non-diabetic patients, so as we learn more and continue to conduct more studies, eventually we will have better evidence and wisdom. What the current studies are showing is that optimal levels for fasting blood glucose should be less than 110 mg/dL and after eating the blood sugar should not increase more than 30 mg/dL from pre-meal blood sugar level. Just like everything in life, you don’t want too little or too much when it comes to your blood sugar level—you want it in balance! Are you concerned about your health or a loved one's health and not sure where to begin? Schedule a FREE 15 minute strategy call with New Beginnings. Schedule online or call 970-305-0101. References: https://my.clevelandclinic.org/health/diagnostics/12363-blood-glucose-test https://pmc.ncbi.nlm.nih.gov/articles/PMC5293555/ https://www.ncbi.nlm.nih.gov/books/NBK555976/ https://www.levels.com/blog/what-should-my-glucose-levels-be-ultimate-guide
By Dr. Shannon Evans, DO, IFMCP May 17, 2024
Learn about the benefits to topical castor oil
By Dr. Shannon Evans, DO, IFMCP June 5, 2023
Are you taking time to support your body in detoxing? Learn what organs are key to detoxing and how to support successful detoxing.
By Dr. Shannon Evans, DO, IFMCP October 1, 2021
Learn steps to decrease symptoms & optimize your health!
By Dr. Shannon Evans, DO, IFMCP July 5, 2021
Is Your Sunscreen toxic? Learn about the top three ingredients to stay away from when buying sunscreen!
By Dr. Shannon Evans, DO, IFMCP April 23, 2021
Is an under active thyroid causing your high cholesterol?
By Dr. Shannon Evans, DO, IFMCP January 5, 2021
Information on mRNA vaccinations based on clinical trials from Moderna and Pfizer. Also information from the CDC.
By Dr. Shannon Evans, DO, IFMCP November 13, 2020
LDN can be helpful to balance out a ticked off immune system
By Dr. Shannon Evans, DO, IFMCP October 6, 2020
Struggling with sluggish, mood swings, PMS or weight gain? These can be symptoms of estrogen dominance. Learn 5 ways to balance your estrogen.
By Dr. Shannon Evans, DO, IFMCP August 16, 2020
Learn simple steps to achieving better sleep, finding your calm and reducing stress.
More Posts