Thyroid & Women: Answering Your Critical Questions (Part 4)

In this Q&A-style episode of The Thyroid Series, Sharon explores the powerful connection between thyroid health and women’s hormonal health through some of the most common real-world questions women ask about their symptoms, lab results, pregnancy, postpartum changes, and perimenopause.

From Hashimoto’s thyroiditis and “normal” TSH levels to postpartum thyroiditis and hormone fluctuations during perimenopause, this conversation breaks down why thyroid disease is so often overlooked, delayed, or misattributed in women.

Sharon explains:

•  Why women are significantly more likely to develop thyroid disease 
•  how pregnancy and postpartum changes can impact thyroid function 
•  why thyroid symptoms are frequently mistaken for anxiety, stress, or hormonal shifts 
•  and why thyroid testing deserves a larger role in women’s healthcare conversations 

Grounded, compassionate, and clinically informed, this episode highlights the overlap among thyroid function, immune health, reproductive hormones, mood, metabolism, and energy—while encouraging women to advocate for a more comprehensive evaluation when symptoms persist.

If you’ve ever felt dismissed, confused by your labs, or unsure whether your symptoms were hormonal, thyroid-related, or both, this conversation is for you.

Transcript

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Your thyroid is running the show. This is Stable Health, the Thyroid Series. Women are five to eight times more likely than men to develop thyroid disease. That statistic alone should make thyroid health a standard part of every woman's healthcare conversation. It is not, and today we are going to change that, at least for everyone listening. This episode is QA format, and every question comes from something I hear regularly from women navigating their thyroid health. Let's get into it. Kuan, I was just diagnosed with Hashimoto's. My doctor says my levels are normal and I don't need medication yet, but I feel terrible. What do I do? This is one of the most common and most frustrating situations in thyroid care. Here is the clinical reality. Hashimoto's is a diagnosis of immune activity against the thyroid. Confirmed by elevated TPO antibodies. TSH can remain technically normal even as the immune attack is active and symptomatic. The current standard of care does not always initiate levothyroxine until TSH crosses a certain threshold. But normal TSH does not mean no thyroid dysfunction. What I recommend, ask your provider to define your TSH target, not just whether it is in range, but where in the range it sits. Some patients feel significantly better with TSH in the lower half of normal. Ask about selenium supplementation. There is reasonable evidence it can reduce TPO antibody levels. Track your symptoms carefully and bring them to every appointment. And if you are consistently symptomatic with a provider who is consistently dismissive, seek a second opinion from an endocrinologist. Q2, I'm pregnant and just found out I have hypothyroidism. Should I be worried? I understand the fear in this question, and I want to give you a grounded answer. Thyroid hormone is critical to fetal brain and nervous system development, particularly in the first trimester, before the baby's own thyroid is functional. Untreated hypothyroidism during pregnancy is associated with increased risk of miscarriage, preterm birth, developmental delays, and preeclampsia. These are real risks, and they are why thyroid function should be screened in pregnancy. The reassuring part, treated hypothyroidism, with levothyroxin dosed correctly, is associated with outcomes that match healthy pregnancies without thyroid disease. The medication is safe in pregnancy. Your dose will likely need to increase in the first trimester and be monitored throughout. Work closely with both your OB and an endocrinologist if possible. This is manageable. And you caught it, which is exactly what matters. Q3. My thyroid symptoms got worse after I had my baby. Is that related? Yes. And this is one of the most underrecognized postpartum conditions in medicine. Postpartum thyroiditis is an autoimmune inflammation of the thyroid that occurs in up to 10% of women in the year after delivery. It typically follows a pattern, a hyperthyroid phase, excess hormone released from the inflamed gland, lasting weeks to months, followed by a hypothyroid phase as the gland recovers. Some women only experience one phase, some experience both. The hyperthyroid phase can look like postpartum anxiety, racing heart, irritability, insomnia, weight loss. The hypothyroid phase can look like postpartum depression, fatigue, low mood, difficulty concentrating, weight gain. Both are routinely attributed to the normal challenges of new parenthood and go undiagnosed. If your postpartum experience has included significant mood, energy, or physical symptoms, ask your provider to check your thyroid function. A simple TSH, Free T4, and Free T3 panel. It is not a long shot. It is a reasonable clinical ask. Q4. I'm in perimenopause and my symptoms have gotten much worse. Can menopause affect the thyroid? This overlap is genuinely one of the most complex conversations in women's health, because the symptoms of thyroid dysfunction and perimenopause are so similar that they mask each other constantly. Estrogen influences thyroid binding proteins, affecting how thyroid hormone is transported and used in the body. As estrogen fluctuates and declines through perimenopause, thyroid hormone dynamics can shift, which may unmask subclinical thyroid dysfunction that was previously compensated. Additionally, if you already have Hashimoto's, the immune changes associated with perimenopause can accelerate its progression. Women who were managed at low doses of levothyroxin for years may find their dose needs adjustment during this transition. If you are in perimenopause and your symptoms have escalated, fatigue, weight changes, brain fog, mood shifts, thyroid function should be part of the clinical picture, not instead of the perimenopause conversation. Alongside it. The through line of every question in today's episode is this. Women's thyroid health is deeply tied to their hormonal health. And the two conversations need to happen together, not separately. Next week, the final episode of the thyroid series. Thyroid and chronic disease. The connections between thyroid dysfunction and cardiovascular disease, metabolic health, mental health, and autoimmune conditions that most people and some providers have never been shown. I am Sharon. Stay stable.