10 Everyday Signs Thyroid May Not Be Working Properly

Your thyroid may be small, but it has a major influence on how your body functions. The butterfly-shaped gland in your neck produces hormones that help regulate metabolism, body temperature, heart rate, digestion, and energy levels.

When the thyroid produces too little hormone, it causes hypothyroidism. When it produces too much, it can lead to hyperthyroidism. Both can affect everyday health, but their symptoms can be easy to mistake for stress, ageing or other common problems.

Here are 10 signs, according to Dr Jayaditya Ghosh, Consultant Endocrinologist at Yashoda Hospitals, Malakpet, that may suggest your thyroid is not working properly.

1. Unexplained Weight Gain Or Loss

A study published in the journal 'Endocrine Practice' indicates that sudden or unexplained change in weight can be one of the most noticeable thyroid-related symptoms.

• An underactive thyroid slows the body's metabolism and may contribute to weight gain, even without major changes in eating habits.
• An overactive thyroid can have the opposite effect, causing unexplained weight loss despite having a normal or increased appetite.

Weight changes can have many causes, so thyroid problems should not be assumed based on weight alone.

2. Constant Tiredness

Feeling exhausted despite getting enough sleep can sometimes be linked to an underactive thyroid. Low thyroid hormone levels can slow several body processes, leaving a person feeling sluggish and lacking energy.

Some people may also notice reduced concentration or difficulty completing everyday tasks.

Persistent fatigue can also result from anaemia, poor sleep, stress and other health conditions, making proper assessment important.

3. Feeling Unusually Cold Or Hot

Do you constantly reach for an extra layer while everyone else is comfortable?

Increased sensitivity to cold is a common symptom of hypothyroidism because the body's metabolism slows and less heat is produced.

People with an overactive thyroid may instead feel unusually hot or sweat more than usual, even when the surrounding temperature is comfortable.

A persistent change in your usual tolerance to temperature may be worth discussing with a doctor.

Also Read: Why Do So Many Women Develop Thyroid Problems? The Reasons You Should Know

4. Changes In Your Heartbeat

Thyroid hormones influence heart rate, shows a study published in the journal 'Heart Rhythm'.
An overactive thyroid can cause a fast or pounding heartbeat, sometimes accompanied by palpitations, anxiety, or sweating.

• An underactive thyroid may slow the heart rate.

If you experience frequent palpitations, a consistently unusually fast or slow heartbeat, dizziness or fainting, medical evaluation is important.

5. Hair Becoming Thinner Or Falling Out

Hair changes can sometimes provide another clue.

An underactive or overactive thyroid can disrupt the normal hair growth cycle, leading to thinning or increased hair shedding.

Some people may also notice changes in their eyebrows, particularly thinning towards the outer edges.

However, hair loss can also result from nutritional deficiencies, hormonal changes, stress, certain medicines, and other conditions.

6. Dry Skin Or Changes In Sweating

Thyroid hormones affect the skin and its ability to maintain moisture.

People with hypothyroidism may develop dry, rough, or flaky skin and may sweat less than usual. Hyperthyroidism can have the opposite effect, with increased sweating and warmer, sometimes more moist skin.

A persistent change in your skin that occurs alongside other thyroid symptoms should be evaluated rather than treated only as a cosmetic issue.

7. Constipation Or Frequent Bowel Movements

Your thyroid can influence how quickly food moves through the digestive system. According to a study published in the journal ‘Frontiers in Physiology’.

• With an underactive thyroid, bowel movements may become less frequent, leading to constipation.
• An overactive thyroid can speed up digestion and may cause more frequent bowel movements or diarrhoea.

Digestive symptoms are common and often have other causes, but a sudden persistent change accompanied by weight or energy changes may warrant a thyroid check.

8. Changes In Mood And Concentration

Thyroid problems can affect more than physical health.

• Hypothyroidism may be associated with low mood, difficulty concentrating, slower thinking and reduced motivation.
• Hyperthyroidism may cause anxiety, irritability, restlessness and difficulty sleeping.

These symptoms are also common in mental health conditions, stress and sleep disorders. However, if mood changes occur alongside physical symptoms such as weight changes, palpitations or temperature sensitivity, thyroid function may need to be assessed.

Also Read: Thyroid and Diabetes Connection: What Happens When You Have Both Conditions?

9. Changes In Your Menstrual Cycle

Thyroid hormones interact with the reproductive system, so thyroid disorders can affect menstrual patterns.

An underactive thyroid may cause heavier or more frequent periods, while an overactive thyroid may lead to lighter or less frequent periods.

Some people may also experience changes in their menstrual cycle when thyroid hormone levels are not properly controlled.

Because menstrual changes have many possible causes, they should be discussed with a healthcare professional if they are persistent or unusual.

10. Swelling In The Neck

A visible or noticeable swelling at the front of the neck can sometimes indicate an enlarged thyroid, known as a goitre.

• Thyroid nodules can also cause a lump or swelling.
• Some thyroid conditions can enlarge the gland even when thyroid hormone levels are normal. A new neck lump should therefore be medically assessed rather than assumed to be a thyroid problem.

Difficulty swallowing, breathing problems or a rapidly enlarging neck swelling require prompt medical attention.

Can Thyroid Symptoms Be Different In Each Person?

Yes. Not everyone with a thyroid disorder experiences the same symptoms. Some people may have several symptoms, while others may have only one or two. Symptoms can also develop gradually, making them easy to overlook.

This is particularly true with hypothyroidism, where tiredness, weight gain, dry skin or constipation may initially be attributed to ageing or lifestyle.

NOTE: The presence of symptoms alone cannot confirm a thyroid disorder.

How Are Thyroid Problems Diagnosed?

A doctor usually starts with a medical history and physical examination. Blood tests are then used to check thyroid function.

The most commonly measured hormones include thyroid-stimulating hormone (TSH) and thyroxine (T4).

If the results suggest a thyroid disorder, additional tests may be recommended to identify the underlying cause. In some cases, an ultrasound or other imaging may be needed, particularly if there is a thyroid nodule or enlargement.

When To See A Doctor?

Consider speaking to a doctor if you have several persistent symptoms, such as unexplained weight change combined with fatigue, changes in bowel habits, temperature sensitivity, or menstrual irregularities. You should also seek medical advice if you experience the following:

• Persistent or unexplained palpitations
• A new lump or swelling in the neck
• Difficulty swallowing or breathing
• Significant unexplained weight loss
• Severe weakness or worsening symptoms

Early diagnosis can help restore thyroid hormone levels to an appropriate range and prevent complications.

Final Word

Your thyroid affects almost every major system in the body, so a problem with the gland can show up in surprisingly everyday ways. Unexplained weight changes, tiredness, temperature sensitivity, hair loss, bowel changes, mood problems and menstrual irregularities can all occur with thyroid disorders. However, these symptoms are not proof that your thyroid is malfunctioning. If several symptoms persist or appear together, a simple blood test can help determine whether your thyroid is responsible. Recognising the pattern early can make thyroid problems easier to diagnose and manage.