How Your Thyroid Can Affect Menstruation

How Your Thyroid Can Affect Menstruation

As women, our periods can define our health. It is our bodies natural response to have regular monthly periods. Therefore, an irregular mensural cycle is a sign that your body is screaming for help.

The thyroid gland plays an important role in women’s bodies, especially in reproductive health.  As a result, it can directly affect your ovaries.  As well as, the production of your sex hormones.

Consequently, having a thyroid problem may be the culprit of your menstrual irregularities. If you are experiencing unusual symptoms during your menstrual cycle, you may need to question whether your thyroid is responsible for these issues.

Keep in mind, that the more severe your thyroid disease is the more likely you are to experience menstrual irregularities.  Even if you are having normal cycles, it does not rule out a thyroid problem.

Hypothyroidism and Menstruation

Hypothyroidism, or an under-active thyroid gland, is a disorder that causes your body to not produce enough thyroid hormones. There are many menstrual irregularities associated with hypothyroidism,  including:

  • Heavy periods
  • Frequent to infrequent bleeding
  • Absent menstrual cycles

Heavy Menstruation

Heavy mensuration can be defined from the American College of Obstetrics and Gynecologists, as one or more from this list.

  • Bleeding for more than seven days
  • Bleeding that soaks through one or more tampons or pads every hour for several hours in a row
  • Needing to wear more than one pad at a time to control menstrual flow
  • Needing to change pads or tampons during the night
  • Menstrual flow with blood clots that are as big as a quarter or larger

Please remember that hypothyroidism can be one cause of heavy bleeding,  but there are many other causes. Some are:

  • Fibroids
  • Polycystic ovary syndrome (PCOS)
  • Uterine Cancer
  • Infections
  • Anemia

Absent or Infrequent Menstruation

Absent  (amenorrhea) or infrequent periods (oligomenorrhea) can occur with hypothyroidism. This occurs due to the increase in thyroid releasing hormones (TRH) for those with hypothyroidism. High TRH levels cause a release of prolactin from the pituitary gland.

Prolactin interferes with estrogen production, causing absent or infrequent periods. In addition, it can cause:

  • Infertility
  • Milky discharge from the breast
  • Symptoms of menopause
  • Hot flashes
  • Vaginal dryness

Hyperthyroidism and Menstruation

Hyperthyroidism is when your thyroid gland is producing too much thyroid hormone. Absent or infrequent periods are the most common menstruation symptom with hyperthyroidism. The increase of thyroid hormone increases the sex hormones which can prevent ovulation, which leads to fertility problems in many women. As well as, a large number of hormones produced increases the risk of miscarriage.


If you are hyperthyroid, you may show symptoms of hypothyroidism and vice versa.  So, balancing your thyroid will help to regulate your menstrual cycle. If you are having any type of irregularities with your period please talk to your doctor.

Let’s Chat

Have you experienced menstrual issues with your thyroid disease? Please share in the comments below!


Kara Stavish

Kara is a teacher, coach, online course instructor and the founder of Concepts Of Life & Wellness. She received a bachelors degree in psychology from Penn State University and not long after was diagnosed with Hashimoto's Autoimmune Disease in 2015. As she struggled to feel better, she began an intense search to find healing. After immersing herself into the learning process, she removed her medication and healed her body. From this experience, she now dedicates her life to helping others learn how to feel better and live a healthier life. Her enthusiasm for healing has helped so many people and continues to do so.

This Post Has 3 Comments

  1. ElizaMae

    Hi Kara, I have definitely experienced menstrual issues with my thyroid disease. In 2013 I was poisoned as I absorbed (for several months) a polyurethane stain on my desk at work. I began to lose most of my hair, energy, health, and clarity of mind. Finally, I discovered the cause. Since then I have been on a journey of healing, having now developed type 2 diabetes, hypothyroid. In 2015 I was diagnosed with hashimotos tyroiditis & EBV. My menstrual irregularities include very heavy periods, having to wear both a tampon and a pad and change both every couple of hours on the heaviest flow days & large clotting. The most concerning thing is that I’m 38 and my husband and I hope to start our family, but because of my health issues, we’ve been unable to as of yet. Reading your article brought some relief as I realized, I’m not alone.

    1. Kara Stavish

      No you are not alone and I am glad that you are finding the answers you need. Even though you may feel like this is such a long process but each step and piece of the puzzle. The journey of healing your thyroid is not a easy process but is possible when you are dedicated. Thank you so much for your comment. I truly appreciate it. Prayers are sent your way for you to start your family.

  2. Wendi

    Hi there! Such a great write-up, thank you!

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