Is Your Thyroid Making You Feel Like a Different Person? Here's What Every Woman Needs to Know — By Dr. Chetna Jain, Gurgaon

Let me ask you something. Have you been feeling exhausted lately — the kind of tired that a full night's sleep just does not fix? Have you noticed your hair coming out in the shower more than it used to? Has your weight been creeping up even though you have not changed a thing about how you eat? Are your periods suddenly irregular, heavier, or more painful than before? Have you been feeling low, foggy, or just... not quite yourself?

If you nodded at more than one of those questions, I want you to know something important: you are not imagining it. You are not "just stressed". And you are most definitely not losing your mind. What you might be experiencing is a thyroid problem — and in my clinic in Gurgaon, I see this story play out almost every single day.

I am Dr. Chetna Jain, a gynaecologist who has been caring for women's health for years, and today I want to have a real, honest conversation with you about the thyroid — what it is, why it matters so much for women specifically, what it feels like when it goes wrong, and what you can do about it. Grab a cup of chai, get comfortable, and let's talk.

First Things First — What Actually Is the Thyroid?

Your thyroid is a small butterfly-shaped gland that sits at the front of your neck, just below your Adam's apple. It is tiny — weighing only about 20 to 30 grams — but do not let its size fool you. This little gland is essentially the engine of your body. It produces two main hormones — T3 (triiodothyronine) and T4 (thyroxine) — that regulate your metabolism, your energy, your body temperature, your heart rate, your digestion, your mood, your skin, your hair, your reproductive system, and even your brain function.

In other words, the thyroid has a hand in almost everything your body does. When it is working well, you probably never even think about it. When it is not — everything starts to feel off, sometimes in ways that are hard to pinpoint or explain.

The thyroid is controlled by another gland — the pituitary — which produces TSH (Thyroid Stimulating Hormone). When your thyroid hormone levels are low, TSH rises to signal the thyroid to produce more. When levels are high, TSH falls. This is why a simple TSH blood test is often the first screening test we do — and why it is so important.

Why Are Women So Much More Affected Than Men?

Here is something that often surprises my patients: thyroid disorders are five to eight times more common in women than in men. And the reason comes down to the intimate, complex relationship between thyroid hormones and the female reproductive hormones — oestrogen and progesterone.

Throughout a woman's life, her hormonal landscape is constantly shifting — through puberty, monthly cycles, pregnancy, postpartum, perimenopause, and menopause. Each of these transitions can either trigger or unmask thyroid dysfunction. This is why thyroid problems tend to surface or worsen during hormonally significant times: after pregnancy, around the perimenopausal years, or during periods of significant stress.

In India, the prevalence of thyroid disorders in women is estimated to be between 10 and 15 percent — meaning roughly one in eight to ten women has a thyroid problem. And studies suggest that a significant proportion of these women are undiagnosed or inadequately treated. That is a lot of women walking around feeling terrible without knowing why.

The Most Common Problem: Hypothyroidism (Underactive Thyroid)

When the thyroid produces too little hormone, everything in your body slows down. This is called hypothyroidism, and it is by far the most common thyroid disorder I see in my female patients in Gurgaon. The most frequent cause is Hashimoto's thyroiditis — an autoimmune condition in which the body's immune system mistakenly attacks the thyroid gland.

The symptoms of hypothyroidism can be so gradual and so varied that many women simply adapt to feeling worse, not realising that what they are experiencing is not normal — and not unavoidable. Here is what to watch for:

• Persistent fatigue and sluggishness — feeling tired even after sleeping well

• Unexplained weight gain or difficulty losing weight despite eating carefully

• Hair thinning or hair loss — often noticed in the shower drain or on the pillow

• Dry skin, brittle nails, and a puffy face — especially around the eyes

• Feeling cold all the time, even when others around you are perfectly comfortable

• Constipation that is difficult to resolve

• Brain fog — difficulty concentrating, forgetfulness, slow thinking

• Low mood, depression, or a general flatness in your emotional life

• A slow heart rate, low blood pressure, or general sluggishness in body functions

• Heavy, irregular, or more frequent periods

Does any of that sound familiar? Many of my patients tell me they had been putting these symptoms down to stress, ageing, or just being a busy woman. Please do not do that. These symptoms are your body sending you a signal — and that signal deserves to be heard.

The Other Side: Hyperthyroidism (Overactive Thyroid)

On the flip side, when the thyroid produces too much hormone, everything speeds up. This is hyperthyroidism, most commonly caused by Graves' disease — another autoimmune condition — or by thyroid nodules that independently secrete hormones. The symptoms of an overactive thyroid feel quite different from the sluggishness of hypothyroidism:

• Unexplained weight loss despite eating normally or even more than usual

• Racing heart or palpitations — a fluttering or pounding sensation in the chest

• Anxiety, restlessness, irritability, and difficulty sleeping

• Trembling hands or fingers

• Feeling hot and sweaty even when others are cool

• Frequent loose stools or diarrhoea

• Light, infrequent, or missed periods

• A visible swelling at the base of the neck (goitre) or bulging eyes in Graves' disease

If several of these sound familiar, please do not self-diagnose or self-treat. Hyperthyroidism requires proper investigation and careful medical management. Both under and over treatment of thyroid conditions carry risks.

The Hidden Connection #1: Thyroid & Your Periods

This is where things get really interesting — and where my role as a gynaecologist becomes so important in diagnosing thyroid problems. The thyroid and the reproductive system are deeply interlinked. Thyroid hormones directly influence the production of sex hormones, ovulation, and the regularity of your menstrual cycle.

Hypothyroidism commonly causes heavy periods (menorrhagia), longer cycles, more frequent periods, or worsening period pain. It can also cause anovulation — cycles where no egg is released — leading to irregular or absent periods. Hyperthyroidism typically does the opposite: lighter periods, fewer periods, or complete cessation of menstruation.

This is why, in my clinic in Gurgaon, I always check thyroid function when a woman comes to me with menstrual irregularities. Treating the thyroid often resolves the period problem entirely — without needing hormonal contraceptives or other interventions. I have seen this happen many times, and it never stops being gratifying.

The Hidden Connection #2: Thyroid & PCOS — A Complicated Friendship

Here is something a lot of women do not know: thyroid dysfunction and PCOS (Polycystic Ovary Syndrome) frequently co-exist — and they can mimic each other's symptoms so closely that one is often missed when the other is diagnosed. Both conditions can cause irregular periods, weight gain, hair loss, fatigue, and fertility difficulties.

Studies suggest that women with PCOS have a significantly higher prevalence of thyroid autoimmunity — particularly Hashimoto's — compared to women without PCOS. This means that if you have been diagnosed with PCOS, it is essential that your thyroid has also been checked. And if your PCOS symptoms are not improving with standard treatment, an undiagnosed thyroid issue might be part of the reason.

I always run a full thyroid panel — TSH, Free T3, Free T4, and TPO antibodies — alongside hormonal testing in all my PCOS patients. It is a simple blood test but it can completely change the treatment approach.

The Hidden Connection #3: Thyroid & Pregnancy — Please Do Not Ignore This

If there is one section of this blog I really want you to pay attention to, it is this one. Thyroid health during pregnancy is absolutely critical — for both you and your baby.

During the first trimester, your baby has no thyroid of its own and depends entirely on your thyroid hormones for brain development and neurological growth. An untreated underactive thyroid during pregnancy is associated with miscarriage, preterm birth, low birth weight, placental abruption, and — most heartbreakingly — impaired cognitive development in the child.

Hypothyroidism is also a surprisingly common cause of recurrent miscarriage. If you have experienced two or more pregnancy losses, thyroid testing — including TSH and anti-TPO antibodies — should be part of your investigation, without question.

There is also a condition called postpartum thyroiditis — a temporary inflammation of the thyroid that affects some women in the months after delivery. It can cause a phase of hyperthyroidism followed by hypothyroidism, often mistaken for postnatal depression or "just" the exhaustion of new motherhood. If you are a new mother and you are not feeling like yourself — beyond the usual sleep deprivation — please mention this to your doctor. A simple blood test can tell us a great deal.

At my clinic in Gurgaon, thyroid screening is a routine part of my antenatal care for all pregnant patients. If you are planning a pregnancy, I strongly recommend getting your thyroid checked before you conceive — ideally as part of a preconception health assessment.

The Hidden Connection #4: Thyroid & Fertility

Are you struggling to conceive and wondering why? Please add thyroid testing to your list of investigations if you have not already. Both hypothyroidism and hyperthyroidism can impair ovulation and reduce the chances of conception. Even subclinical hypothyroidism — where TSH is mildly elevated but symptoms are minimal — has been linked to reduced fertility and higher miscarriage risk.

The good news is that once thyroid levels are brought into the optimal range with appropriate medication, many women see a significant improvement in their menstrual regularity, ovulation, and conception rates. Treatment is simple, affordable, and effective. But it only works if the problem is found first — and that requires testing.

The Hidden Connection #5: Thyroid & Menopause — Double Trouble

Here is a scenario I encounter very regularly in my clinic: a woman in her late 40s comes in complaining of hot flashes, fatigue, mood changes, weight gain, and sleep problems. She assumes — reasonably — that she is going through menopause. And she may well be. But here is the complication: hypothyroidism and menopause share so many of the same symptoms that they are frequently confused for each other, or one is missed entirely because the other is assumed to be the culprit.

In women over 40, the risk of both developing a thyroid disorder and going through perimenopause increases simultaneously. I always check thyroid function in women of this age group presenting with these symptoms — because treating a thyroid problem is very different from managing menopause, and getting the diagnosis right makes all the difference in terms of treatment and outcomes.

So What Tests Do You Actually Need?

I am going to keep this simple for you. If you are a woman and you suspect your thyroid might not be quite right, here are the tests I typically recommend:

• TSH (Thyroid Stimulating Hormone) — the single best screening test for thyroid function. High TSH suggests hypothyroidism; low TSH suggests hyperthyroidism.

• Free T3 and Free T4 — the actual thyroid hormones, measured alongside TSH for a fuller picture.

• Anti-TPO antibodies (Thyroid Peroxidase Antibodies) — to check for Hashimoto's thyroiditis or Graves' disease. Essential if you have a family history of thyroid autoimmune disease.

• Thyroid ultrasound — recommended if there is a palpable lump, goitre, or if nodules are suspected.

These are straightforward, affordable blood tests available at any good diagnostic lab in Gurgaon. I can arrange them directly from my clinic and interpret the results in the context of your full clinical picture — your symptoms, your cycles, your reproductive history, and your overall health.

Treatment — The Good News Is It Is Usually Very Manageable

One of the things I love telling my newly diagnosed thyroid patients is this: of all the chronic conditions a woman can have, hypothyroidism is one of the most straightforward to treat. A once-daily tablet of levothyroxine — a synthetic form of T4 — taken on an empty stomach every morning, is usually all it takes to bring thyroid hormone levels back to normal. Most women notice a significant improvement in energy, mood, weight, and periods within four to eight weeks of starting the right dose. The medication is safe, affordable, and — once the correct dose is found — very well tolerated.

Hyperthyroidism treatment is a little more complex and may involve anti-thyroid medications, radioactive iodine, or in some cases, surgery — depending on the underlying cause and severity. This requires specialist evaluation and ongoing monitoring.

There are also lifestyle factors that support thyroid health — ensuring adequate selenium and iodine in the diet, managing chronic stress (which suppresses thyroid function), getting good quality sleep, and avoiding excessive consumption of raw goitrogens (foods like uncooked cabbage, broccoli, and cauliflower in very large amounts, which can interfere with thyroid hormone production). However, these are supportive measures — not replacements for medication when medication is needed.

A Few Questions I Get Asked All the Time

"Doctor, I already take thyroid medication. Do I still need to be monitored?"

Absolutely yes. Thyroid hormone requirements can change with age, weight changes, pregnancy, menopause, and even changes in the medications you take. I recommend a TSH check every six to twelve months for women on stable thyroid treatment — and more frequently during pregnancy, when requirements often increase significantly.

"My TSH is 'borderline' but my doctor says it is normal. Should I be worried?"

This is such an important question. Standard TSH reference ranges in Indian labs can be quite wide — and what is considered "normal" by the lab may not be optimal for every individual, especially if you have symptoms or are trying to conceive. If your TSH is in the upper end of the normal range and you have classic thyroid symptoms, it is absolutely worth a conversation with your doctor about whether treatment might benefit you. Please do not let a lab stamp of "normal" silence your legitimate health concerns.

"Can thyroid problems run in families?"

Yes — thyroid autoimmune diseases, in particular, have a strong genetic component. If your mother, sister, or other close female relatives have thyroid conditions, your risk is meaningfully higher than average. I recommend proactive thyroid screening for women with a family history, even before symptoms develop.

You Know Your Body Better Than Anyone

If there is one thing I want you to take away from this conversation today, it is this: trust yourself. If you feel like something is not right — if you have been tired in a way that does not make sense, if your hair and your periods and your weight and your mood have all been off at the same time — listen to that feeling. Come in and let us investigate together.

Your thyroid is a small gland, but it has an enormous impact on every aspect of how you feel as a woman. And you deserve to feel well. Not just "okay" or "managing". Actually, genuinely well.

If this blog has resonated with you, I would love to see you at my clinic in Gurgaon. I see patients from Palam Vihar, DLF, South City, Sector 22, Sector 23, and all across NCR — and I promise you, no question is too small, no concern too trivial. Book your appointment today, get your thyroid checked, and let us figure this out together.

Because a healthier, more energised, more like-yourself version of you is waiting on the other side of one blood test.

With warmth and care,

— Dr. Chetna Jain | Senior Gynaecologist & Women's Health Specialist | Gurgaon, Haryana