hair loss, mitochondria and thyroid

Thyroid Hormones, Mitochondrial Functioning, and Hair Loss

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Hair loss is a common symptom of thyroid disease. In our research, hair loss, changes in color or luster, and skin changes are regularly reported as one of the first symptoms noticed in an emerging non-allergenic adverse reaction to a medication or vaccine. These symptoms often coincide with unexplained fatigue and muscle pain. Given that many patients who develop the more chronic, multi-symptom medication or vaccine reactions also develop thyroid disease and frequently exhibit signs of mitochondrial damage, I wondered if somehow the hair and skin changes could be early warning signs of diminished mitochondrial functioning. I also wondered if all of these variables were connected. It turns out that not only are they connected, but incredibly interdependent.

What are Mitochondria?

Recall from high school biology, the mitochondria are those bean-shaped organelles inside cells that are responsible for cellular respiration or energy production. Through a variety of pathways, the mitochondria provide fuel for cell survival. In addition to cellular energy production, mitochondria control cell apoptosis (death), calcium, copper, and iron homeostasis, and steroidogenesis. In essence, mitochondria perform the key tasks associated with cell survival, and indeed, human survival. Damage the mitochondria and cellular dysfunction or death will occur. Damage sufficient numbers of mitochondrion and chronic, multi-symptom illness arises.

How to Damage Mitochondria

Mitochondria are remarkably resilient given the proper nutrients, but without those nutrients, they can be highly susceptible to damage. Mitochondrial damage can be inherited via mutations in maternal DNA (mtDNA) or nuclear DNA and present at birth or remain latent until triggered later in life, as in the case of mitochondrial endocrinopathies. Mitochondria are also susceptible to epigenetic changes, which can be heritable and acquired and remain latent until triggered.  Finally, mitochondrial impairment can derive from pharmaceutical or environmental exposures and nutrient or cofactor deficits. The sheer number of mechanisms that can influence mitochondrial functioning and heritability make diagnosing and predicting mitochondrial dysfunction difficult at best, particularly acquired or functional mitochondriopathies that are not evident from genetic or epigenetic testing. It is precisely those acquired mitochondriopathies, particularly those seemingly triggered by pharmaceutical reactions, that we are most interested in here at Hormones Matter. Indeed, acquired mitochondrial damage represents a nascent and emerging field in medicine, particularly in toxicology, as many drugs and vaccines damage mitochondrial functioning both directly and indirectly.

What Mitochondrial Damage Looks Like

Mitochondrial damage presents in a highly diverse, multi-organ, multi-symptom manner. On the surface, patients with mitochondrial dysfunction will appear to have multiple, unconnected diagnoses, from gastrointestinal distress to cognitive deficits, from cardiac arrhythmias to multiple sclerosis-like symptoms, and everything in between and beyond. According to Dr. Richard Boles, an expert on mitochondrial dysfunction:

“Mitochondrial dysfunction doesn’t really cause anything, what it does is predisposes towards seemingly everything. It’s one of many risk factors in multifactorial disease. It can predispose towards epilepsy, chronic fatigue, and even autism, but it doesn’t do it alone. It does it in combination with other factors, which is why in a family with a single mutation going through the family, everyone in the family is affected in a different way. Because it predisposes for disease throughout the entire system.”

This is partially because the human body contains over a billion mitochondria which are essential to cellular functioning in every cell of the body. Where the dysfunction emerges is dependent upon where the impaired mitochondria reside, by what mechanism the mitochondria are damaged, and how intervening variables, such as overall health, nutrition, and environment come into play. Given the mitochondrion’s role in energy production, highly energy-dependent tissues such as the brain, the heart, the liver, and even muscles, are most susceptible to direct mitochondrial damage. And considering the mitochondrion’s role in cellular energetics, fatigue is almost always present with mitochondrial dysfunction.

Hormone Synthesis and Mitochondrial Functioning

Adding yet another layer of complexity, mitochondria also control steroid production in the adrenal glands, ovaries, testes, and thyroid. Any impairment of mitochondrial functioning can have a significant influence on hormone production and regulation. Since hormones, like the mitochondria, also impact all facets of biological homeostasis, energy, and metabolism, damage to endocrine mitochondria can represent a double-hit and begin a cascade of endocrine ill-effects that are difficult to control. This is particularly true of the thyroid gland.

Thyroid Hormones and Mitochondrial Functioning

The cells within the thyroid gland are dependent upon proper mitochondrial functioning to maintain health and proper mitochondrial functioning is dependent upon thyroid hormones to manage cellular energy production. This reciprocal and interdependent relationship makes the thyroid especially susceptible to a mitochondrial spiral. Both thyroid and mitochondrial damage have been observed in our medication and vaccine adverse reaction populations.

Thyroid hormones regulate mitochondrial functioning. Triiodothyronine (T3) in particular is considered one of the major regulators of mitochondrial activity stimulating mitochondrial biogenesis (the birth of new mitochondria) both directly (genomic), indirectly (non-genomic), and epigenetically.

T3 is responsible for increasing cellular heat production and oxygen consumption, core activities of mitochondrial metabolism. In hypothyroid states, heat and oxygen are reduced, whereas, in hyperthyroid states, the two are increased. Here the intracellular patterns of heat and energy production correspond to the clinical symptoms of hypo- and hyperthyroid states. Other thyroid hormones along  the hypothalamus – pituitary – thyroid axis (HPT) and the other iodothyronines within the thyroid hormone metabolic pathway influence mitochondrial functioning. Remove or reduce the presence of the thyroid hormones and mitochondria produce less energy and eventually die. With them, the cells in which they reside die too. Conversely, as mitochondria within the thyroid become less efficient, smaller concentrations of thyroid hormones are produced.  With reduced thyroid hormones, mitochondrial efficiency continues to decline and so on, and so on.

Hair Follicles: Mini – HPTs

German researchers recently identified multiple mechanisms by which human hair follicles are responsive to thyroid hormones. Their research showed that human skin and hair follicles possess an equivalent peripheral HPT axis with all of the corresponding hormones such as the central HPT. It turns out that hair follicle mitochondria are differentially responsive to each of the thyroid hormones along that axis and are responsive to other iodothyronines not typically considered bioactive, such as diiodothyronine (T2).

An interesting finding, related specifically to the hair follicle, and perhaps other mitochondria, thyroid hormones were protective against reactive oxygen species (ROS) production via multiple mechanisms. ROS, also called free radicals or oxidants, are natural by-products of oxygen (energy) metabolism important to a number of basic cell and life processes, like signaling and the defense against pathogens, but ROS levels must be kept in strict balance. Too much or not enough ROS and health goes awry. In the case of adverse fluoroquinolone reactions, increased ROS production is implicated.  According to the hair-follicle study, thyroid hormones protect against ROS production and regulate the enzymes that scavenge for and eliminate free radicals – our own internal antioxidants. If this function is conserved throughout the body, it provides one more reason to investigate and appropriately manage thyroid damage in medication adverse reactions.

Hair Loss and Mitochondrial Damage

Skin and hair follicles are dense with mitochondria and highly regulated by thyroid hormones such that the mechanism for hair loss in some individuals can be attributed to either diminished thyroid hormones and/or damaged mitochondria. Since the relationship between thyroid hormones and mitochondria is reciprocal, it is difficult to tell which impairment comes first. However, given what we know about hair growth cycles and what we know about thyroid hormones and mitochondrial functioning, it is possible to speculate and backdate a chemical insult precipitating sudden and unexplained hair loss. For more incipient reactions, it is a bit more difficult. Regardless, however, it appears that unexplained hair loss is a sign of poor mitochondrial functioning.

Hair growth occurs in phases. The anagen phase is the growth cycle where hair follicles grow about 1 cm per day for 28 days. This growth phase lasts for 2-7 years. The exact time frame is genetically, or more specifically, epigenetically determined by factors associated with the health of the maternal grandmother. After the anagen phase, the hair follicles reach a transitional, quiescent period lasting approximately 2-3 weeks. This is then followed by the telogen phase where hair begins to fall out. At any given time, up to 90% of hair follicles are in the anagen or growth phase while the remaining follicles are either catagen (10-14%) or telogen phases (1-2%).

Chemo Induced Hair Loss: Answers in the Mitochondria?

With chemotherapy, hair loss begins 2-4 weeks after treatment begins and although multiple mechanisms have been investigated, none have been able to explain or treat effectively chemo-induced hair loss. I would suspect that given the time frame, the toxic insult of chemotherapy, the role of mitochondria in hair growth, and the connection to thyroid damage, that chemo-induced alopecia is representative of mitochondrial damage. The ability to maintain hair growth during chemo may be related to supporting mitochondrial and/or thyroid health.

In the case of other presumed less toxic or at least less directly toxic chemical insults such as medication or vaccine adverse reactions, the initial loss of hair that begins either in the weeks preceding the full onslaught of symptoms or coincident with those symptoms, marks a decline in mitochondrial functioning and likely an impending decline in thyroid functioning.

Hair Loss: A Reallocation of Mitochondrial Resources

Considering, that hair generation is an energy (read mitochondrial) intense process, sudden hair loss could be an early marker that mitochondrial resources are limited and being reallocated towards more critical operations like brain and heart functioning. When the components for proper mitochondrial functioning are absent, be it the thyroid hormones or the co-factors necessary for cellular energy (ATP) production, the first wave of resource allocation might be to cease non-essential activities. The non-essential activities would include hair growth (and wakefulness in general – read Medication and Vaccine Adverse Reactions and the Orexin – Hypocretin Neurons). Sudden or unexplained hair loss could indicate mitochondrial impairment. Backdate the hair loss 2-4 weeks and an illness, a medication, vaccine, or environmental exposure could be the culprit. Whatever the cause, the thyroid and mitochondrial health should be considered and treatment initiated accordingly because if the disease process continues, the symptoms will expand beyond the hair, potentially to every tissue and organ in the body. Concurrently, investigate and amend nutritional status. Mitochondrial functioning is critically dependent on proper nutrients. Deficits in important nutrients, like thiamine, can have severe repercussions.

Feed your thyroid. Feed your mitochondria.

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This article was first posted on Hormones Matter in May of 2014.

Chandler Marrs MS, MA, PhD spent the last dozen years in women’s health research with a focus on steroid neuroendocrinology and mental health. She has published and presented several articles on her findings. As a graduate student, she founded and directed the UNLV Maternal Health Lab, mentoring dozens of students while directing clinical and Internet-based research. Post graduate, she continued at UNLV as an adjunct faculty member, teaching advanced undergraduate psychopharmacology and health psychology (stress endocrinology). Dr. Marrs received her BA in philosophy from the University of Redlands; MS in Clinical Psychology from California Lutheran University; and, MA and PhD in Experimental Psychology/ Neuroendocrinology from the University of Nevada, Las Vegas.


  1. You have to understand the association between health and “stress”. Stress is anything that happens to you on a daily basis through life, that demands an uptick in homeostasis. The uptick requires energy. Loss of hair is a typical example of energy failure and simply means that you are not meeting (adapting) the unavoidable daily stresses of living. That is why thiamine worked in my patient, simply because it stimulates energy production.

  2. Would you like to describe your type of hair loss? It is like that with me: First, it started on top of my head right behind a small stripe of hair behind my forehead, where the hair fell out. this went on for quite some time. After a couple of months I got hair loss all over my head and it keeps going on. Now I am curious what type of hair loss I have. My father has the same pattern of bald with a small stripe of hair behind his forehead followed by a bald circle on top, but on the sides and the back, everythings fine with his hair. That’s why I think it could be androgenetic hair loss, but for this type, my hair falls out way to fast and easy (by small penetration). Then the hair loss on the top could also be alopecia areata because its like a circe (exactly like the pattern of the person on the picture). And last but not least it could be diffuse hair loss since the last 12 months because Im loosing hair everywhere on my head. I do have a diagnosed Hyperthyroidism and my doctor is giving me medicaments against it and my thyroid is almost on a good level again but noone can tell me wether my hair loss is a result of the desease or the medicaments against it. I am at quite a young age and I am definetely not ready to go bald for the rest of my life. Do you have any idea whats the origin of the hair loss and how I can make it stop? Like I already said, my hair loss looks pretty much like the one in the articles picture.
    Sorry for my bad english, its a foreign language for me.
    Best greetings

  3. I want to update this string of comments. Many years ago I was confronted with a young woman who had lost every single hair repeatedly. With treatments, hair had partially grown and fallen out. This is known as a condition called Alopecia Totalis. In the 70s,I was then experimenting with the clinical use of a derivative of thiamine whose chemical name is thiamine tetrahydrofurfuryl disulfide (TTFD) and is now sold as Allithiamine and Lipothiamine from the same vendor). Although it has exactly the same action as dietary vitamin B1 (thiamine), it is used as a medication and this patient began to receive 100 mgs of TTFD 3 times a day (Note that the RDA for thiamine is 1.5mg/day). She grew the most glorious head of golden hair that I had ever seen, that stayed indefinitely as long as she maintained the TTFD. I made a slide that I showed at medical conferences. However, an odd thing happened. Before the Alopecia had first appeared, she experienced seizures and they began to return. Explanation: the Alopecia was because of mitochondrial energy deficiency that had been restored by the use of TTFD. BUT, restoration of energy had also restored the seizures and we have evidence that the cause o seizures is closely related to energy loss.

    • Derrick, your last few sentences here do not make much sense. How can you say the restoration of energy caused seizures and yet they were caused by energy loss all in the same paragraph. I would be expecting the thiamine to regrow the hair and removing the seizures, not simply regrowing hair and then bringing back seizures. Perhaps this oddity is an example where thiamine is not helpful ? Please clarify.

      • I missed this comment and am reading it in November 2020. I hope that Johan might come back. Perhaps thiamine deficiency caused the alopecia from ATP deficiency. Restoration of hair from thiamine treatment was also associated with return of seizures. Therefore Johan is quite right: my explanation does not make sense. I have to assume that the seizures were dependent on the neurotransmitter acetyl choline, which is dependent on thiamine for the production of the acetyl group. So the lack of the acetyl group caused stoppage of seizures and thiamine restored it. This explanation fits because thiamine stimulates energy synthesis AND the production of the neurotransmitter/

        • It’s January 2021 – here is to hoping someone comes back to read this:

          B6 is one of the treatments used for seizures. Is it possible that B1, in being intertwined with B6, drove B6 down and in this particular individual, due to their own biochemistry – brought on the seizures?

  4. How does a person get help? I can’t afford to jump from one doctor to another, whom most won’t listen or don’t know so they send you to this specialist and that specialist who still don’t know or don’t listen. This is so discouraging It is very hard to figure this all out for ones self with no medical background, or capabilities to test yourself. I have hashimotos/hypothyroidism, digestive issues, chronic fatigue etc. etc. Every time I try a supplement that should make me feel better or help me it backfires. I know it is such a deeper problem, the mitochondria, but impossible to get anyone to help figure out how to fix it. I love this website and your articles. Thank you, I have learned alot.

    • Huh, funny. I didnt realize I had already read this article. And apparently commented. I have come a little ways with thyroid treatment but still struggle with energy. Stress, nutrition and sleep for me seem to be HUMUNGOUS factors. I took thiamine for a period of time, ran out and have not gotten amymore. I do have benfothiamine, but i dont think it agrees with me. Idk. Still such a puzzle.

  5. This is very interesting as a new hiccup in my symptoms is allergic symptoms leading to a high tsh indicating underactive thyroid, but since I have a history of viral related thyroiditis and several bouts a few years ago, I was NOT put on thyroid hormone as my tsh usually swings back to normal. Severe fibromyalgia brought on by Lupron while I was on t4 hormone , guote” has nothing to do with my thyroid”. HA! Being put on low dose Paxil, among other things, years ago to control symptoms, I feel better if I raise my dose by a mere 5mg. but what eventually happens is insomnia and the first time I stayed on increased dose for two months without negative effects (by the way, I’ve never felt better, my BP and heart was normal first time in years and FM symptoms virtually disappeared) and my tsh went down to .o1, meantime, I decreased my dose because of insomnia and my thyroid swung back to normal, of course I am told this is not related to the Paxil. I disagree, every single time I’ve tried this, if my tsh is checked during the up swing or down swing, nobody knows what to do….what, I ask myself, would happen if I got off Paxil altogether???? Would it become underactive or is Paxil just irritating it. I was originally put on it after starting Lithium (that I didn’t need) and when I stopped lithium, the thyroid hormone was continued being told that I was probably going underactive anyway, since my mother did. I am trying to muster up enough energy to tell my story about Lupron hell, I guess if I do a little every day, like this I might get there….. Why don’t doctors really listen? When? Not on this forum.

    • …take amino acid called L-tyosine 1.500 mg two time a day ..dodnot take L-tyrosine after 6:00pm (you will not sleep) and donot take L-tyrosine if you have high blood pressure or heart disease .

      Also eat Korean Radish (Daikon radish) buy it at a Korean grocery store daikon every day will balance your thyroid after three months .The normal small little red radish is also okay to eat if you can’t find Daikon radish. Virgin unrefined coconut oil is very good for the thyroid …eat one spoon a day .

      Quit eating refine carbs and junk food ! no fried food , no white flour , no baking goods .no damaged fats like peanut butter , no mayonaise , no vegetable oils , no margarine . ……only eat olive oil , coconut oil , lard or butter .Detox your liver ..water and lemon and fast …..!

  6. Fluoroquinolone antibiotics, such as ciprofloxacin, are routinely given during operations, generally without a patient’s knowledge. So I would be suspicious that your hair loss, and any other adverse events you’ve had since your hysterectomy, are due to this. It is what happened to me. I have a huge litany of miserable problems now, including massive hair loss. After being floxed it is nearly impossible to get hormones, or anything else, balanced.

    • Louise, you are so right about pre and post op FQ use. Our local Ortho group prefers them over all others, and they do not disclose it. There is research showing that these agents have an affinity for gathering in joint spaces. This is criminal. I found this out after all of my major tendon ligament structures in my left leg gave out one day causing the bones and joint spaces to break in my lower leg and ankle. This was after years of discomfort and burning from a 2012 Cipro experience. To have the Ortho tell me that it was not the fault of Cipro as it is their drug of choice was frightening. It was like being in the brown recluse spider’s den.

  7. I have been losing hair ever since my unwarranted hysterectomy 8 years ago (read my hysterectomy story and other articles here on HormonesMatter). No hormone cocktail (including thyroid hormones) has stopped the loss for any length of time. It did stop briefly years ago while I was on a certain HRT but I was miserable in every other way. And that was the first HRT I tried and the initial massive shedding occurred while I was on it. But I attributed it more to the loss of my body’s own hormones (and stress on my remaining endocrine glands) with anesthesia a possible contributing factor. This telogen effluvium has been like a switch that cannot be turned off!

    • WS, I remember your story and it just reinforces how important the intricate workings of all our hormones are and how each is important in maintaining proper homeostasis. This article is a “keeper” and addresses a topic that doesn’t receive the attention it deserves. One thing a lot of doctors don’t tell women before their hysterectomies is how their thyroid is going to be impacted very negatively and what it will mean for the body as a whole.

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