Living with thyroid

Overview

The thyroid is a small, butterfly-shaped gland at the front of your neck. It makes hormones that control your body's metabolism – how your body uses energy. A thyroid condition means your thyroid makes too much or too little of these hormones, which can affect your energy, weight, heart rate, and mood.

Yes. Thyroid conditions are among the most common hormonal problems, especially in women and older adults.

Anyone can develop a thyroid condition, but it is more common in women, people over 60, and those with a family history. It can also occur during pregnancy or after giving birth.

Symptoms

Common symptoms

• Feeling tired all the time
• Unexplained weight gain or weight loss
• Feeling too cold or too hot
• Dry skin and hair changes
• Constipation or diarrhoea
• A slow or fast heartbeat
• Mood changes, including anxiety or low mood
• Difficulty concentrating or memory problems

Symptoms in children

• Slow growth and delayed development
• Late baby teeth or delayed puberty
• Poor appetite or excessive tiredness
• Difficulty at school
• Swelling at the front of the neck

Symptoms in older adults

• Unusual tiredness and weakness
• Weight changes without trying
• Memory problems or confusion
• Feeling unusually cold or hot
• Rapid or irregular heartbeat
• Constipation or difficulty swallowing

Causes

Main causes

• An autoimmune reaction, where the body's immune system attacks the thyroid gland (Hashimoto's thyroiditis or Graves' disease)
• Too much or too little iodine in the diet (though this is rare in many countries)
• Thyroid surgery or treatment for a previous thyroid problem
• Certain medicines, infections, or pregnancy-related changes

Risk factors

• Being female
• Age over 60
• A family history of thyroid conditions
• Having another autoimmune condition, such as type 1 diabetes or rheumatoid arthritis
• Previous radiation to the neck or chest area

When to see a doctor

See a doctor urgently if:

• If you have trouble breathing, swallowing, or a sudden change in heart rate, get emergency care right away.
• If your symptoms are rapidly getting worse and you feel very unwell, call your local emergency number or go to a hospital.

Book a routine appointment if:

• Make a routine appointment if you have ongoing tiredness, weight changes, feeling hot or cold, or mood changes.
• Also if you notice a swelling or lump in the front of your neck, or a hoarse voice that lasts more than a few weeks.

Diagnosis

A doctor will ask about your symptoms, examine your neck, and usually arrange a blood test. The blood test measures your thyroid hormone levels and another hormone called TSH that helps control the thyroid.

Tests that may be done

• Blood test for TSH, T3 and T4 hormones
• Blood test for thyroid antibodies (if an autoimmune condition is suspected)
• Ultrasound scan of the thyroid gland
• Radioactive iodine scan or uptake test (in some cases)
• A fine-needle biopsy (if a nodule is found and needs checking)

What to expect at your appointment

You may need to wait a few days for results. If thyroid levels are outside the normal range, your doctor will explain what this means and talk through the next steps. In many cases you can be treated without any hospital stay.

Treatment

Treatment depends on whether your thyroid is underactive or overactive. Most people manage very well with medicines, regular blood tests, and a healthy lifestyle.

Self-care at home

• Take medicines exactly as prescribed and do not stop without talking to your doctor
• Keep track of your symptoms and tell your healthcare team if they change
• Attend all follow-up blood tests and appointments
• Ask your doctor what eating and exercise pattern works best for you

Medical treatments

For an underactive thyroid, treatment usually involves thyroid hormone replacement – a medicine that replaces the missing hormone and is taken daily. For an overactive thyroid, treatment may include medicines that reduce thyroid activity, radioiodine therapy (which gradually reduces hormone production), or, in some cases, surgery. Your endocrinologist will explain the options and the benefits and risks of each.

When is surgery considered?

Surgery to remove part or all of the thyroid gland may be recommended if there is a large goitre (enlarged thyroid), a suspicious nodule, or if other treatments have not worked. Your doctor will discuss this with you in detail.

Living with this condition

With the right treatment, many thyroid conditions are stable and do not limit daily life. You will likely need lifelong blood tests and possibly daily medication. It helps to build a routine so you remember to take medicines and to keep a simple symptom diary.

Lifestyle tips

• Get enough sleep and manage stress
• Stay active with regular exercise
• Limit alcohol and avoid smoking
• Tell your healthcare team if you are pregnant or planning a pregnancy

Diet and exercise

A balanced diet is important for everyone. If you have a thyroid condition, there is no special miracle diet. In some cases your doctor may advise about iodine intake – ask them for personalised advice. Regular gentle exercise, like walking, can help energy and mood.

Mental health and emotional wellbeing

Living with a thyroid condition can affect your mood, energy, and confidence. It is common to feel anxious, low, or overwhelmed, especially before your hormone levels are stable. You are not alone, and support from your healthcare team, family, or a counsellor can help. If you are struggling with thoughts of self-harm or hope for the future, please reach out to a crisis line immediately.

Prevention

Most thyroid conditions are not preventable. Autoimmune causes cannot be stopped, and hormone changes may happen naturally with age or after pregnancy. However, early diagnosis and treatment can prevent complications and greatly improve quality of life.

Vaccines

Vaccines do not prevent thyroid conditions. But staying up to date with your routine vaccinations is important to keep your immune system strong.

Screening programmes

Routine screening is not offered to everyone, but if you have a family history or symptoms, your doctor can arrange a test. If you are pregnant or planning pregnancy, thyroid checks may be part of your antenatal care.

Complications

If left untreated

• Heart problems, such as irregular heartbeat or heart failure
• Weak bones (osteoporosis), especially in underactive thyroid
• Difficulty getting pregnant or pregnancy complications
• A condition called myxoedema coma (rare but serious) in underactive thyroid, or thyroid storm in overactive thyroid – both need emergency care

Long-term outlook

With early diagnosis and continued treatment, most people with thyroid conditions live a full, active life. You may need lifelong medication, but your hormone levels can be managed well with regular check-ups. Many people feel themselves again within a few weeks or months of starting the right treatment.

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