In Today’s article, I will explain how thyroid disease and Hashimotos can affect a woman’s menstrual cycle. I will also explain how thyroid disease can affect a woman’s hormones including estrogen, progesterone, and testosterone.  Whether you’re newly diagnosed or have been trying to manage thyroid symptoms for years, understanding how your thyroid functions can be crucial in achieving better hormonal balance and overall health no matter your age.

If you’re experiencing irregular, heavy, or unpredictable menstrual cycles, the root cause may lie within a small but powerful gland: the thyroid. Both hypothyroidism and Hashimoto’s disease can significantly affect your menstrual health.

How Hypothyroidism Affects a Woman’s hormones

Understanding the intricate dance of hormones in a woman’s body is key to addressing various health issues, particularly those involving the thyroid and menstrual cycles. How thyroid disease can affect a woman’s menstrual cycle is a topic of growing interest for many who are seeking answers. Menstrual disorders can be a frustrating symptom of underlying thyroid problems, but gaining insight into this connection is the first step towards finding relief.

Hypothyroidism occurs when the thyroid gland doesn’t produce enough thyroid hormones, particularly thyroxine (T4) and triiodothyronine (T3). These hormones are crucial for regulating various bodily functions, including metabolism, cardiovascular health, and reproductive processes. When hormone levels drop, every system in the body, including the reproductive system, can go haywire. Let’s take a look at how hypothyroidism and Hashimotos can affect each hormone in a woman’s body.

Hypothyroidism and Estrogen

One way hypothyroidism can affect a woman’s menstrual cycle is through the impact it has on estrogen levels and liver function.

Hypothyroidism can affect the liver’s ability to metabolize estrogen. Decreased thyroid function can slow down estrogen metabolism, leading to an accumulation of estrogen in the body. In hypothyroidism and Hashimotos disease, there may be an increased conversion of estradiol to estrone, a weaker form of estrogen. Low estradiol and increased estrone can result in imbalances in the ratio of different types of estrogen (E1, E2, E3). This is one of the reasons many women find relief using supplements like DIM and Curcumin. DIM and curcumin help with not only inflammation but also with metabolizing estrogen.

Low levels of thyroid hormones have also been shown to be an independent risk factor in NASH and NAFLD Non-Alcoholic Fatty Liver Disease (*) Because Hypothyroidism can affect the liver’s ability to metabolize and clear estrogen from the body a condition known as estrogen dominance can often be seen in woman with hypothyroidism.

Estrogen dominance can exacerbate symptoms like bloating, breast tenderness, and mood swings as well as contribute to Small Intestinal Bacterial Overgrowth better known as SIBO.

If someone suspects that hypothyroidism is affecting their menstrual cycle or estrogen levels, consulting with a Certified Functional Medicine Practitioner for appropriate testing and management is recommended.

How Hypothyroidism and Progesterone Levels

Hypothyroidism can also affect a woman’s menstrual cycle by influencing her progesterone levels. In hypothyroidism, impaired ovarian function may lead to irregular ovulation, which can reduce progesterone production, since this hormone is primarily produced after ovulation by the corpus luteum.

Thyroid dysfunction can result in irregular menstrual cycles, anovulation (lack of ovulation), or even amenorrhea (absence of menstruation). Without regular ovulation, the body will not produce the typical amounts of progesterone, leading to hormonal imbalances come the next cycle.

Hypothyroidism can affect a woman’s menstrual cycle in another, Hypothyroidism can affect liver function, which is crucial for detoxification and hormone metabolism. This can result in changes in how the body processes and clears both estrogen and progesterone. The liver plays another important role when it comes to thyroid function. The conversion of T4 into T3 takes place in the liver. A woman with impaired liver function could also have low T3 levels.

Given these potential effects, it is essential for woman with hypothyroidism and menstrual irregularities to work closely with a Certified Functional Medicine Practitioner to ensure proper treatment of both their thyroid condition and hormonal/Menstrual health.

How Hypothyroidism Affects Testosterone Levels

For women with hypothyroidism, impaired thyroid function can lead to changes in the production of testosterone. Thyroid hormones, particularly thyroxine (T4) and triiodothyronine (T3) play a role in regulating the production of SHBG in the liver.

SHBG is a protein that binds to sex hormones (Estrogen, DHT, and testosterone). I like to explain to my patient that SHBG is like a Taxi that takes your hormones around the body and drops them off at different locations. But here’s what’s important. The levels of SHBG can significantly affect the availability of your sex hormones (Estrogen, Testosterone, DHT), in a woman’s body. Every woman is different. Some women may have too much SHBG some women may not have enough. In respect to Hypothyroidism, too much SHBG would cause low testosterone, low estrogen, and low DHT while too little or low levels of SHBG might lead to higher levels of free (unbound) testosterone, DHT, and estrogen.

The changes seen with elevated testosterone or DHT might include menstrual cycle irregularities, irritability, anger, hair loss, brain fog, altered libido, or changes in muscle and weight dynamics. This is not to say that every woman with hypothyroidism is going to have increased or decreased testosterone but this highlights why testing SHBG is so important.

How Hypothyroidism Affects DHEA Levels

DHEA is primarily produced by the adrenal glands. While there is no direct thyroid hormone control over DHEA production, overall endocrine interactions influence adrenal function. I have written several articles about the Adrenal-Thyroid connection.

What’s important to understand about Hypothyroidism is that the overwhelming majority of women suffering from thyroid dysfunction are either under or have been exposed to a bout of chronic stress. It is this chronic stress response that lays the groundwork for adrenal fatigue or HPA axis dysregulation.

Monitoring and interpreting DHEA levels in the context of thyroid conditions should be done carefully and as part of a Comprehensive Hormone evaluation and thyroid treatment.

How Hypothyroidism Affects Cortisol Levels

Thyroid disease can influence a woman’s menstrual cycle by altering her cortisol levels. Cortisol is a hormone produced by the adrenal glands that helps regulate many of our flight or fight functions. Cortisol helps regulate metabolism, reduce inflammation, and control blood sugar levels, among other functions. Hypothyroidism and cortisol levels have a complex relationship, as the thyroid and adrenal glands interact closely as part of the endocrine system. Adrenal fatigue is common in women with thyroid problems and it is also common in women who have problems with their menstrual cycle

Studies have shown that hypothyroid patients are prone to both increased and decreased cortisol levels.  Both can have an impact on the menstrual cycle. Symptoms that indicate a potential problem with your cortisol levels may include fatigue, mood changes, insomnia, brain fog, weight gain, hair loss, and salt/sugar cravings. Learn more about adrenal fatigue here

If you are thinking that these symptoms sound very similar to hypothyroidism or Hashimotos you would be right! This is why Comprehensive thyroid management should always include an assessment of BOTH Cortisol and DHEA levels.

Understanding Hashimoto’s Disease

Hashimoto’s disease is the leading cause of hypothyroidism. It’s an autoimmune disorder where the body’s immune system attacks the thyroid gland, leading to inflammation and gradual loss of thyroid tissue function. When the thyroid becomes so damaged, it stops producing thyroid hormones (T3 and T4) and you become permanently hypothyroid.

Women, in particular, are more likely to develop Hashimoto’s than men, making them susceptible to a host of problems induced by low thyroid hormone levels. Because Hashimotos destroys the thyroid gland, the effects of Hashimotos on a woman’s menstrual cycle parallels that of a woman with hypothyroidism.

How Thyroid Disease and Hashimotos Can Affect Menstrual Cycle

1. Irregular Periods

One of the most common symptoms of hypothyroidism and Hashimotos disease is menstrual irregularity. When thyroid hormone levels are off-balance, it disrupts the menstrual cycle, causing periods to become erratic. T3 Thyroid hormone influences the normal growth and shedding of the endometrial lining (the lining of the uterus). Low T3 can lead to endometrial dysfunction, which causes irregularities in the menstrual cycle, such as heavier, longer, or irregular periods.(*)

2. Heavy Menstrual Bleeding (Menorrhagia)

Heavy menstrual bleeding, or menorrhagia, is another significant concern for women with hypothyroidism. Low Thyroid Hormones impact the stability of the uterine lining and can impair blood clotting mechanisms, leading to excessively heavy periods. Women often experience anemia due to iron loss from the heavy bleeding. Iron anemia in turn affects thyroid hormone production.(*) You can read why Iron is so important for your thyroid in this article.

3. Light or Absent Periods (Hypomenorrhea or Amenorrhea)

When it comes to the thyroid and menstrual cycle some women can find themselves to be all over the map. Women with low T3 levels may experience anovulation (lack of ovulation), leading to irregular or absent periods, as T3 plays a role in the normal functioning of ovaries.

 4. Worsened Premenstrual Syndrome (PMS)

PMS symptoms can worsen with hypothyroidism. Mood swings, anxiety, depression, and physical symptoms like bloating and breast tenderness can all become more pronounced. The imbalance of thyroid hormones further destabilizes the hormonal fluctuations inherent to the menstrual cycle.

5. Fertility Issues and Miscarriage Risk

Hypothyroidism and Hashimoto’s disease can also affect fertility. Thyroid hormone imbalances can complicate ovulation, making it more challenging to conceive.

 

 

Diagnosing Thyroid-Related Menstrual Problems

1. Case History/Review: A thorough review of your medical history, past labs, symptoms, diet, stressors, medications, supplements, etc.

2. Thyroid Function Test: Blood tests measuring Thyroid-Stimulating Hormone (TSH), T4, and Total T3, Free T3, Reverse T3, levels can diagnose hypothyroidism.

3. Thyroid Antibody Test: Thyroid antibodies can help diagnose Hashimotos disease. Antibody testing should include testing both thyroid peroxidase (TPO) antibodies and antithyroglobulin antibodies.

4. Adrenal and Sex Hormone Testing-

It’s essential to consult a Certified Functional Medicine Practitioner if you are facing thyroid menstrual cycle irregularities alongside Thyroid Problems.

Functional medicine offers a refreshing and comprehensive approach to managing thyroid-induced menstrual cycle issues, moving beyond the limitations of conventional treatments to address the root causes of hormonal imbalances. By considering the whole person rather than isolated symptoms, functional medicine can provide more effective and sustainable solutions for individuals experiencing these concerns.

Diet and Nutrition:

Anti-Inflammatory Diet: Adopting a diet rich in anti-inflammatory foods is a fundamental step in balancing hormones and enhancing thyroid health. Whole food options like fruits, vegetables, whole grains, and healthy fats can naturally support the body’s healing processes.

Individualized Nutritional Plans: Functional medicine emphasizes understanding and addressing food sensitivities or allergies personally tailored to promote optimal health and alleviate menstrual discomfort.

Balanced Nutrition: Prioritizing balanced meals that stabilize blood sugar levels can markedly improve hormonal regulation, addressing a core issue often left unchecked by conventional medicine.

Nutritional Supplements:

Essential Nutrients: Supplements such as selenium, zinc, vitamin D, and B vitamins are critical in functional medicine, promoting optimal thyroid function and overall well-being.

Herbal Remedies: Beneficial herbs, including ashwagandha and black cohosh, DIM can provide natural hormonal support and balance, often with fewer side effects compared to traditional pharmaceuticals.

Sleep and Stress Management:

Prioritizing Restorative Sleep: Consistent, high-quality sleep is a cornerstone of hormonal balance that functional medicine practitioners emphasize, often overlooked in standard medical care.

Exercise:

Holistic Fitness Regimens: Functional medicine advocates for a balanced exercise approach blending cardio, strength training, and flexibility, crafting a harmonious lifestyle that supports thyroid function and aids in symptom relief.

Gut Health:

Comprehensive Gut Health Approach: Recognizing the gut-thyroid connection, functional medicine promotes enhancing the gut microbiome through probiotics and a high-fiber diet, addressing underlying issues rather than masking symptoms.

Detoxification:

Proactive Detoxification: Functional medicine encourages reducing toxin exposure and supporting liver health as essential steps in achieving optimal hormone balance, a focus often downplayed in conventional care.

Individuals seeking a more holistic and proactive method of addressing thyroid-induced menstrual cycle issues may find functional medicine’s personalized strategies particularly appealing. By focusing on the integration of diet, lifestyle, and environmental factors, functional medicine empowers individuals to take control of their health naturally and effectively. However, it is important for those pursuing these methods to work closely with functional medicine practitioners to tailor a safe and effective approach to their unique needs.

Here is What You Need To Remember About Hypothyroidism and Menstrual Health

The interplay between hypothyroidism, Hashimoto’s disease, and a woman’s period is intricate and impactful. Understanding how these thyroid conditions affect menstrual health including menstrual cycle is crucial for effective treatment and management. Today’s article talked a lot about the different ways thyroid disease can affect a woman’s menstrual cycle.

I also touched on Hashimotos and how that can affect a woman’s period. But one thing I can stress enough is the importance of testing. You can’t guess about your hormones. By getting the proper testing and treatment, most woman can improve their menstrual cycle and the disruptions caused by hypothyroidism and Hashimoto’s disease.

People Who Read this article Also Recommend it.

Be sure to check out all the links mentioned throughout this site, Heres a few more.

• How Iron deficiency shuts down thyroid hormone production
• Adrenal Fatigue and Thyroid: How Are They Connected?
• Patterns of Thyroid Dysfunction- Why You Still Struggle with Thyroid Symptoms
• SIBO- Everything You Wanted To Know About Small Intestinal Bacterial Overgrowth
• Detox and Cleanse Your Liver with These 8 Liver Superfoods
• Best Supplements to Help Detox and Cleanse the Liver