thyroid in older adults
Informed by recognized medical guidance
Overview
Your thyroid is a small gland in your neck that makes hormones. These hormones help control your energy, heart rate, and body temperature. As you get older, your thyroid can make too little or too much hormone. This can cause symptoms like tiredness, weight changes, or feeling down. It is common but very treatable.
Key facts
- Thyroid problems are more common as people age, especially underactive thyroid.
- Symptoms can be subtle and are often mistaken for normal aging.
- With simple treatment, most people feel much better.
Yes. Underactive thyroid becomes more common in people over 60. Overactive thyroid is less common but still possible.
Both women and men can develop thyroid conditions, but they are much more common in women. The risk rises with age.
Symptoms
- Chest pain or pressure
- Trouble breathing
- Fainting or passing out
- A pounding, racing, or irregular heartbeat
- Sudden confusion that does not go away
- ⚠Fever with a fast heartbeat
- ⚠Feeling weak or very shaky
- ⚠Heavy sweating for no reason
- ⚠Repeated vomiting or diarrhea
- ⚠New or worsening confusion
Common symptoms
- Feeling very tired
- Weight gain or weight loss without trying
- Feeling cold all the time
- Dry skin or hair
- Muscle aches and weakness
Symptoms in children
- Thyroid problems in children can affect growth and development, but they are different from those in older adults. If you have concerns about a child, talk to their pediatrician.
Symptoms in older adults
- Memory problems or brain fog
- Depressed mood or anxiety
- Poor balance or falls
- Increased weakness, especially in the legs
- Confusion, especially in overactive thyroid
- Weight loss with little or no appetite
Causes
Main causes
- Damage to the thyroid due to an immune system attack (the most common cause of underactive thyroid)
- Autoimmune disease called Graves' disease (a common cause of overactive thyroid)
- Small growths (nodules) on the thyroid that make extra hormone
Risk factors
- Being female
- Being over 60
- Having a family history of thyroid disease
- Having had thyroid surgery or radiation to the neck
- Taking certain medicines that affect the thyroid
When to see a doctor
See a doctor urgently if:
- Call your doctor or go to urgent care the same day if you have a fever and a racing heartbeat, or if you feel faint, confused, or extremely weak.
Book a routine appointment if:
- Make an appointment if you notice new or lasting tiredness, mood changes, or weight changes.
- Ask for a thyroid check if you have a family history or previous neck treatment.
- Mention any side effects from thyroid medication at your next visit.
Diagnosis
Your doctor will talk with you about your symptoms and check your neck for lumps. The main test is a blood test that measures your thyroid hormone levels.
Tests that may be done
- TSH blood test — the most common first test
- Free T4 blood test
- T3 blood test if the doctor needs more information
- Thyroid ultrasound if the doctor feels a lump
What to expect at your appointment
The blood test takes only a few minutes and does not require fasting. Your doctor may repeat the test to be sure. If the result is outside the normal range, you may be referred to a hormone specialist.
Treatment
Treatment depends on whether your thyroid is underactive or overactive. Most thyroid conditions can be managed well. You will need regular checkups and blood tests to make sure your hormone levels are balanced.
Self-care at home
- Take any prescribed medicine exactly as directed.
- Do not stop or change your medicine without talking to your doctor.
- Keep a symptom diary to share with your healthcare team.
- Stay up to date with your blood tests and appointments.
Medical treatments
For an underactive thyroid, doctors usually prescribe a daily hormone replacement pill. This replaces the hormone your body is not making enough of. For an overactive thyroid, treatment may include medicine to lower hormone production, radioactive iodine therapy to reduce thyroid activity, or surgery. Your doctor will explain the options and the risks and benefits of each.
When is surgery considered?
Surgery may be recommended if you have thyroid nodules that look suspicious, thyroid cancer, or an overactive thyroid that does not respond to other treatments. The surgeon may remove part or all of the thyroid.
Living with this condition
Once your thyroid is stable, you can live normally. You will take your medicine or follow your treatment plan, and get regular blood tests. Many people feel a big improvement in energy, mood, and thinking within weeks or months.
Lifestyle tips
- Be physically active at your own pace — walking and gentle strength exercises are great.
- Get plenty of rest and try to keep a regular sleep schedule.
- Stay active mentally with puzzles, reading, or social time.
- Avoid smoking and limit alcohol.
Diet and exercise
Eat a varied diet with fruits, vegetables, whole grains, and lean protein. No special diet can replace thyroid medicine, and most people do not need extra iodine. Ask your doctor before taking high-dose iodine or herbal supplements. Regular exercise helps keep your bones strong, your heart healthy, and your mood lifted.
Mental health and emotional wellbeing
Thyroid disorders can affect your mood, memory, and confidence. It can feel frustrating or isolating. You can talk to a counsellor or your GP. You can also join a support group. If you ever have thoughts of harming yourself, contact a local crisis line right away.
Prevention
Most thyroid conditions are caused by the immune system and cannot be prevented. But you can prevent complications by noticing symptoms early, getting a diagnosis, and sticking to your treatment plan.
Screening programmes
Doctors sometimes check thyroid levels if you are over 60 and have other health conditions. Ask your doctor whether routine screening makes sense for you.
Complications
If left untreated
- Heart rhythm problems or high cholesterol
- Osteoporosis or bone fractures
- High blood pressure
- Memory loss or severe confusion
- A rare but life-threatening thyroid storm or myxedema coma
Long-term outlook
The outlook is generally very good. With the right treatment, most older adults with thyroid problems feel healthier and more energetic. Even if you need lifelong treatment, you can stay independent and active. Your healthcare team will support you along the way.
Find support
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
Related conditions
Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 31, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.