Symptoms of an underactive thyroid

Symptoms of an underactive thyroid

The thyroid, a butterfly-shaped gland at the base of your neck, plays a crucial role in regulating your body's metabolism and energy levels. When this powerhouse isn't performing at its best, it can lead to an underactive thyroid, also known as hypothyroidism. In this article, we'll delve into the common symptoms of an underactive thyroid, shedding light on how it can impact your daily life.

Understanding the thyroid's role

Before we dive into the symptoms, let's grasp the thyroid's role. This small gland produces hormones that influence various bodily functions, including metabolism, heart rate, and energy levels. When the thyroid doesn't produce enough hormones, it can result in hypothyroidism, causing a range of symptoms¹.

Common symptoms of an underactive thyroid

1. Fatigue and weakness

Feeling persistently tired, even after a good night's sleep, is a hallmark symptom of hypothyroidism. The lack of thyroid hormones can lead to a drop in energy levels, leaving you feeling fatigued and weak².

2. Weight gain

Unexplained weight gain can be a frustrating symptom. An underactive thyroid can slow down metabolism, making it easier to gain weight even with regular exercise and a balanced diet².

3. Cold sensitivity

If you find yourself feeling unusually cold, especially in your hands and feet, it could be linked to an underactive thyroid. Thyroid hormones play a role in regulating body temperature, and a deficiency can result in increased sensitivity to cold³.

4. Dry skin and hair

Skin and hair health are influenced by thyroid hormones. Hypothyroidism can lead to dry, itchy skin and brittle hair. You may notice increased hair shedding or difficulty maintaining skin moisture⁴.

5. Muscle and joint pain

Muscle and joint pain, including stiffness and achiness, can be associated with an underactive thyroid. This symptom may impact your overall mobility and comfort⁴.

6. Depression and mood changes

Changes in thyroid hormone levels can affect mood and mental well-being. Individuals with hypothyroidism may experience symptoms of depression, mood swings, or difficulty concentrating⁵.

7. Irregular menstrual cycles

For women, an underactive thyroid can disrupt menstrual cycles. Irregular periods, heavier than usual bleeding, or even fertility issues may arise due to hormonal imbalances⁶.

8. Constipation

Sluggish digestion is a common symptom of hypothyroidism. It can lead to constipation, making it important to monitor changes in bowel habits⁴.

Navigating thyroid health

Curious about your thyroid's wellbeing? Take control with our Thyroid Profile Blood Test. Detect potential issues early, empowering yourself with vital insights. Don't let symptoms linger—act now for a healthier tomorrow. Your journey to optimal thyroid health starts with a simple blood test.


1. American Thyroid Association. "Hypothyroidism (Underactive)."

2. Mayo Clinic. "Hypothyroidism (Underactive Thyroid)."

3. EndocrineWeb. "Cold Intolerance."

4. Cleveland Clinic. "Hypothyroidism."

5. National Institute of Mental Health. "Mood Disorders."

6. American College of Obstetricians and Gynecologists. "Thyroid Disease."