Physiological and Emotional Messages from the Low-Functioning Thyroid in Iridology
Written October 2025
Figure 1: Thyroid (Cleveland Clinic, n.d.)
The anatomy of the body is very peculiar. The thyroid gland is located in the throat and is positioned precisely where blood flows into the brain, enhancing oxidation. The brain is overheating with phosphorus. The oxidation process between phosphorus and oxygen occurs at a slow rate. Iodine promotes oxidation, acting as a catalyst that stimulates the brain like stoking a fire (Jensen, 1983).
My Story
A few years ago, during a very challenging time in my life, my body came to a standstill. With the immense stress of that time, my physical health was beginning to collapse. I was mentally and physically exhausted, overwhelmed by everything, with a complete lack of ambition. Blood tests revealed a very low hormone level, especially in the thyroid. I was over 60 years old and stressed to the very core. I had elevated blood cholesterol, which contributed to 50% hair loss. Managing simple daily tasks became completely unbearable. Bless my doctor, who was not only a medical doctor but also a practitioner of Chinese medicine, Ayurveda, and naturopathy, as well as a hematologist. We undertook a significant intervention, and through his guidance and my commitment, I successfully restored my endocrine function and overall health.
As a Naturopath and Iridologist, I have observed a growing trend of thyroid imbalance among my family, friends, and clients. I began researching to validate this increasing tendency and to determine its extent, as well as to investigate the underlying reasons. The focus of this paper is to explore a condition characterized by low thyroid function, commonly referred to as hypothyroidism (HT). I will discuss the thyroid gland and its function, the causes of reduced function, the role of Iridology, the emotional component, and provide suggestions to support thyroid health.
The Thyroid Gland
The thyroid is a crucial component of the endocrine system, which comprises a network of glands responsible for producing and secreting hormones. The thyroid gland, intricately shaped like a butterfly, is situated at the front of the neck, just beneath the skin, and measures approximately 2 inches in length. The primary function of the thyroid gland is to regulate your metabolism, which is the process by which your body converts the food you eat into energy. Every cell in your body relies on this energy to operate effectively. When the thyroid is not functioning optimally, it can have a significant impact on overall health and well-being (Cleveland Clinic, n.d.).
An underactive thyroid can manifest gradually over time, sometimes spanning several years. Individuals may experience a range of symptoms, which could include cognitive difficulties such as brain fog or forgetfulness, along with feelings of depression and anxiety. Other potential indicators may consist of dry, coarse skin and hair, increased blood cholesterol levels, persistent fatigue, heavy menstrual periods, hoarseness, decreased tolerance to cold temperatures, mood fluctuations, and sensations of numbness or tingling in the hands. Additionally, unexplained weight gain may be a concern for some.
Recent findings from the National Health and Nutrition Examination Survey [NHANES] and data from the Optum claims database covering 2012-2019 indicate that the prevalence of hypothyroidism within the United States population has seen a significant increase over the past two decades, more than doubling during this period (Cleveland Clinic, 2022).
Function of the Thyroid Gland
The thyroid gland serves as an endocrine organ that produces and releases hormones essential for various bodily functions. It relies on iodine, which it absorbs from the bloodstream, to synthesize these hormones. The primary hormones produced by the thyroid include Thyroxine (T4), Triiodothyronine (T3), Reverse Triiodothyronine (RT3), and Calcitonin. It is essential to maintain a suitable level of iodine, as imbalances—whether excessive or insufficient—can impact hormone production and release. These hormones are known to have a significant impact on several key bodily functions, including metabolism, heart rate, respiration, body temperature regulation, brain development, cognitive function, as well as the maintenance of skin and bones, and fertility (Cleveland Clinic, n.d.).
Causes for a Low-Functioning Thyroid
Some medications, such as lithium or thalidomide, can affect thyroid performance. A condition at birth could cause an issue. Iodine deficiency in the diet, pituitary gland disorders, or inflammation of the thyroid following a pregnancy or viral illness can influence thyroid function. “Hashimoto’s Disease is the most common cause of hypothyroidism. It’s an autoimmune disease, so it happens when your immune system attacks your thyroid” (Cleveland Clinic, 2022).
Chronic stress can lead to a poorly functioning thyroid due to increased cortisol. This stress hormone can interfere with the body’s ability to convert T4 to the active T3 hormone, resulting in a slower metabolism, weight gain, and fatigue. Managing stress becomes a significant concern when hormone production is affected.
Iridology and the Thyroid Gland
Many of my clients have signs in their irises or sclera in the thyroid regions of the eye, or both. These messages indicate an incomplete diet, genetic history, chronic stress, or, as I will discuss later in The Emotional Component, possible emotional suppression.
Iris signs observed in this midline region may exhibit a diverse array of characteristics, including rarefactions, lacunae, tophi, pigments, reflexives, radials, and a spectrum of eye shading phenomena (Lueders, 2024). The signs observed in these areas offer valuable insights into the physiological state of a client’s organ systems, as well as their emotional well-being. As Iridologists, it is our responsibility to analyze and assess this information thoughtfully.
The sclera reveals a more present-time message from the thyroid. Dr. Leonard Mehlmauer states, “Sclerology may be generally defined as the science of the markings in the whites of the eyes describing conditions of health… The red lines and other markings…correspond to real conditions within the body” (Mehlmauer, 2002, p. 1). Dr. Mehlmauer brings to our attention the thyroid region in the right (eye) medial quadrant and the left (eye) medial quadrant of his sclerology map (Mehlmauer, 2014). This is a broadened reactive field of the thyroid, extending beyond the iris, providing us with much more information. Red sclera lines can appear as simple congestion in the form of lines, forks, trauma or injury lines, as well as many other signs. Each distinct sign contributes to the narrative, reflecting the thyroid's resilience or sensitivity (Mehlmauer, 2002).
The Disharmony Line in Iridology and the Thyroid
It is worth mentioning that the thyroid region, located between 2:30 and just before 3 o’clock in the right eye and just above 9 o’clock and 9:30 in the left eye, runs pretty close to the horizontal dividing line of the iris. During the Level III training provided by Sweet Herbin’ Livin’, titled “Opposites Attract” and presented by Birgit Lueders, we gain insight into this area, known as the disharmony line. This midline area effectively divides the upper and lower halves of the irises. From observations of various signs, such as rarefactions, lacunae, tophi, pigments, reflexives, radials, and different eye shading, we derive information about the genetic structure and potential condition of the thyroid. While the line of balance, or the vertical line that divides the iris into two, is dominant and relates to coordination, the disharmony line is associated with disharmony between the upper and lower body. This disharmony can be caused by hypothyroidism and hyperthyroidism (Lueders, 2024).
The Emotional Component
In Eastern traditions, the throat chakra, known as vishuddhi, is perceptively associated with the thyroid gland and the ability to express oneself. “Vishuddhi chakra, which is related to communication and self-expression, is easily affected by emotional stress and bottled emotions, which may have a direct or indirect effect on the thyroid gland as well as the sacral and heart chakras” (Ratan & Ratan, 2019, p. 42). The throat chakra is where we speak our truth. When stifled, blocked, or suppressed, density forms. We need to learn to express what needs to be said and share our feelings to prevent trapped emotions.
Holding in your feelings can contribute to chronic stress. When you suppress emotions, your body's "fight-or-flight" response (sympathetic nervous system) stays active, elevating cortisol levels and disrupting the fragile balance of hormones that regulate thyroid function. This has been known to potentially aggravate thyroid conditions like Hashimoto's and Graves' disease (Cleveland Clinic, n.d.).
How to Improve Low Thyroid Function
Eating a balanced diet will support thyroid health. Iodine-rich foods, such as seaweed, fish, iodized salt, nuts, seeds, legumes, whole grains, and lean meats, promote hormone production (Endocrinemds, 2024). Processed foods often contain additives that discourage thyroid production, so minimizing them, as well as sugary foods, is a good idea. Regular exercise boosts metabolism and helps regulate hormone levels. Managing stress to regulate cortisol levels is critical, as is maintaining sufficient sleep. Prioritizing regular checkups and obtaining blood lab tests for thyroid function is essential, particularly as you age.
Self-care overall is a good rule of thumb. To this I would add the foundations of health, which include clean water, early sunshine, fresh air, a healthy variety of fresh, vital foods, adequate rest, and nurturing a spiritual bond with the Creator, allowing for a deeper understanding of our place in the universe. Other iodine-rich foods to enjoy include: artichokes, Brussels sprouts, coconut, cucumber, eggplant, garlic, goat whey or cottage cheese, kale, okra, onions, oysters, peanuts, salmon, spinach, squash, strawberries, tofu, turnips, and watermelon (Endocrinemds, 2024).
Conclusion
In conclusion, a low-functioning thyroid is a prevalent endocrine disorder that significantly impacts the lives of millions, particularly women who are disproportionately affected. The clinical symptoms can range from mild to severe, underscoring the importance of early detection and effective management. Targeted screening and awareness campaigns tailored for women can facilitate timely interventions, considering the unique ways in which hormonal fluctuations influence symptoms and treatment responses.
The thyroid plays a crucial role in regulating metabolism and energy transformation through hormone production, making dietary and lifestyle choices fundamental to maintaining its health. Practices such as stress management and adequate rest are vital in supporting thyroid function. Furthermore, emerging approaches such as Iridology may provide additional insights into thyroid vulnerabilities, offering holistic strategies that incorporate dietary and lifestyle modifications to support overall well-being.
Lastly, it is crucial to recognize the psychological impact of thyroid disorders, which can affect self-esteem and mental health. By cultivating a compassionate approach to self-care and identifying the body’s signals, individuals can improve their overall health and happiness. Ultimately, by addressing both the physiological and emotional messages of thyroid wellness, we can create a comprehensive care strategy that empowers those affected, thus promoting lasting health improvements.
References
American Thyroid Association. (2023, August). Hypothyroidism: an underestimated
issue. Journal of Clinical Thyroidology, 35(7), 264-267. https://www.thyroid.org/patient-thyroid-information/ct-for-patients/august-2023/vol-16-issue-8-p-5-6/
Cleveland Clinic. (2022, January 14). Hypothyroidism (Underactive Thyroid): Symptoms & Treatment. https://my.clevelandclinic.org/health/diseases/12120-hypothyroidism
Cleveland Clinic. (n.d.). Thyroid. https://my.clevelandclinic.org/health/body/23188-thyroid
Endocrinemds. (2024, October 11). How to keep your thyroid healthy for optimal well-being. https://www.endocrinemds.com/blogs/how-to-keep-your-thyroid-healthy-for-optimal-well-being/
Jensen, B. (1983). The chemistry of man. Bernard Jensen International.
Mehlmauer, L. (2002). Sclerology: A new view of an ancient art. Grand Medicine Books.
Mehlmauer, L. (April 2014). Sclerology by Grand Medicine. [Map].
https://eyology.com/product/sclerology-map/
Ratan, R., Ratan, M. (2019). Journey through the chakras. Arromatantra.