Feeling tired all the time, even after a full night’s sleep? Persistent fatigue can affect your concentration, mood, productivity and quality of life. While tiredness is often linked to a busy lifestyle or poor sleep, it can sometimes be a sign of an underlying medical condition.
If you regularly wake up feeling exhausted, struggle to get through the working day or find that your energy levels never quite return to normal, it may be worth looking beyond your daily routine.
At Glasgow Medical Rooms, our Tired All the Time Health Assessment is designed to investigate persistent fatigue and help identify potential underlying causes, including nutritional deficiencies, thyroid problems, hormonal factors and other medical conditions.
In this article, we explore some common reasons for ongoing tiredness, when to seek medical advice and how a focused health assessment can help you take the next step towards understanding your symptoms.
Why am I tired all the time?
Occasional tiredness is a normal part of life. Long working hours, family responsibilities, disrupted sleep and periods of stress can all leave you feeling drained.
However, fatigue that persists, affects your daily activities or occurs without an obvious explanation deserves attention.
Unlike ordinary tiredness, which often improves with rest, persistent fatigue may continue even when you are getting what seems to be enough sleep.
There is no single cause of ongoing tiredness. It can be associated with lifestyle factors, emotional wellbeing, nutritional deficiencies or a range of medical conditions. Identifying the underlying reason is important because the most appropriate approach will depend on what is contributing to your symptoms.
7 possible reasons you may feel tired all the time
1. Poor sleep or disrupted sleep patterns
Sleep is essential for physical recovery, concentration and emotional wellbeing. If your sleep is regularly interrupted or you are not getting enough good-quality rest, you may feel exhausted during the day.
Common contributing factors include irregular working hours, stress, excessive caffeine, alcohol and using electronic devices late at night.
Persistent tiredness despite adequate sleep can sometimes indicate a sleep disorder, such as sleep apnoea, particularly if you snore heavily or someone notices that you stop breathing during sleep.
If improving your sleep routine does not help, consider discussing your symptoms with a healthcare professional.
2. Iron deficiency and anaemia
Iron is needed to produce haemoglobin, the protein in red blood cells that carries oxygen around the body.
Low iron levels can contribute to fatigue, weakness and reduced exercise tolerance. If iron deficiency leads to anaemia, you may also experience breathlessness, dizziness, headaches or palpitations.
Iron deficiency can have several causes, including heavy menstrual bleeding, pregnancy, dietary factors or blood loss. It is important to establish the cause rather than simply assuming you need an iron supplement.
Blood tests, including a full blood count and ferritin, may help assess whether anaemia or low iron stores are contributing to your symptoms.
3. Thyroid problems
The thyroid gland helps regulate metabolism, energy use and several other bodily functions.
An underactive thyroid, known as hypothyroidism, can cause persistent fatigue alongside symptoms such as feeling unusually cold, constipation, dry skin, weight gain and difficulty concentrating.
Thyroid problems can develop gradually, so symptoms may be easy to overlook or attribute to a busy lifestyle.
Thyroid blood tests, including thyroid-stimulating hormone (TSH) and free thyroxine (FT4), can help assess thyroid function when clinically appropriate.
4. Vitamin and nutritional deficiencies
Your body needs a range of nutrients to function properly. Inadequate levels of certain vitamins and minerals can contribute to fatigue and other symptoms.
Examples include:
- Vitamin B12: Low levels can contribute to tiredness and, in some cases, neurological symptoms such as tingling or numbness.
- Folate: This vitamin is important for red blood cell production.
- Vitamin D: Low levels can affect bone and muscle health and may be associated with muscle discomfort.
- Iron: Essential for normal haemoglobin production and oxygen transport.
Nutritional deficiencies can result from dietary intake, absorption problems, certain medical conditions or other factors.
Appropriate blood testing can help identify specific deficiencies where indicated, allowing your clinician to discuss suitable treatment or dietary changes.
5. Blood sugar problems and diabetes
Changes in blood glucose regulation can sometimes contribute to tiredness.
Diabetes may cause fatigue alongside symptoms such as increased thirst, passing urine more frequently, unexplained weight loss or blurred vision. However, some people have few noticeable symptoms, particularly in the earlier stages.
Tests such as HbA1c and blood glucose can help assess blood sugar levels and investigate possible diabetes or other glucose regulation problems.
Your clinician can advise which tests are appropriate based on your symptoms, medical history and individual risk factors.
6. Stress, anxiety and low mood
Mental and physical health are closely connected. Ongoing stress, anxiety and depression can affect sleep, concentration, motivation and energy levels.
You may feel exhausted even when you have not undertaken much physical activity. Some people also experience headaches, muscle tension, changes in appetite or difficulty switching off at night.
It is important not to dismiss persistent fatigue as simply stress without considering other possible causes. A healthcare professional can help explore both physical and psychological factors and discuss appropriate support.
7. Other medical conditions or medication effects
Persistent fatigue can occur alongside a range of other health conditions, including infections, inflammatory disorders and kidney problems.
Some medicines can also contribute to tiredness, depending on the medication and individual circumstances.
This is why reviewing your medical history, current medication and lifestyle is an important part of investigating ongoing fatigue. Your symptoms, examination findings and initial test results can help guide any further investigations that may be needed.
When should you get your tiredness checked?
You do not need to wait until fatigue becomes severe before seeking advice.
Consider arranging a medical assessment if:
- You have been feeling tired for several weeks without a clear explanation.
- Your energy levels are affecting work, exercise, family life or everyday activities.
- You regularly wake up feeling unrefreshed despite getting enough sleep.
- You have noticed other symptoms, such as changes in weight, unusual thirst, breathlessness or difficulty concentrating.
- You suspect a nutritional deficiency or thyroid problem.
- Your tiredness continues despite making reasonable changes to your sleep routine and lifestyle.
A healthcare professional can help determine whether your symptoms warrant blood tests or other investigations.
Seek urgent medical advice if fatigue is accompanied by concerning symptoms such as chest pain, severe breathlessness, fainting or sudden confusion. Do not wait for a routine health assessment if you are experiencing an emergency.
What tests can help investigate persistent fatigue?
There is no single blood test that identifies every possible cause of tiredness. The most appropriate investigations depend on your symptoms, medical history and clinical assessment.
However, a focused investigation may look at several areas of health to build a clearer picture of what could be contributing to your fatigue.
At Glasgow Medical Rooms, our Tired All the Time Health Assessment includes blood tests and laboratory screening across the following areas.
Full blood count
A full blood count measures different types of blood cells, including red blood cells, white blood cells and platelets.
It can help identify anaemia and provide information that may indicate the need for further investigation.
Iron status
Tests including ferritin, iron, transferrin and transferrin saturation help assess iron levels and iron stores.
These can be useful when investigating possible iron deficiency, particularly where fatigue occurs alongside other relevant symptoms.
Thyroid health
Thyroid investigations include TSH and free thyroid hormones, alongside thyroid antibodies as part of the assessment panel.
These tests can help investigate thyroid dysfunction and, where appropriate, possible autoimmune thyroid disease.
Nutritional health
The assessment includes testing relating to vitamin B12, folate, vitamin D, albumin, adjusted calcium and iron.
Results can help identify certain nutritional abnormalities that may warrant treatment or further assessment.
Diabetes health
The assessment includes HbA1c, glucose, insulin and C-peptide.
These tests provide information about blood glucose regulation and aspects of insulin production. Your clinician can interpret the findings in the context of your symptoms and medical history.
Kidney health
Kidney-related tests include creatinine, estimated glomerular filtration rate (eGFR), cystatin C, urea and electrolytes.
These provide information about kidney function and fluid and electrolyte balance.
Infection and inflammation
C-reactive protein (CRP) is a marker that can rise with inflammation and some infections. It is not specific to a single condition, so results need to be interpreted alongside your symptoms and other findings.
Urinalysis
Urine screening assesses several markers, including glucose, protein, blood, ketones, nitrites and white blood cells.
Depending on the findings, urinalysis may provide additional information about your health or indicate the need for further investigation.
Blood pressure, BMI and health history
The assessment also includes blood pressure measurement, height and weight for BMI calculation, and a review of your medication and lifestyle history.
These checks help put your test results into context and may highlight other factors relevant to your health.
The overall purpose is to investigate potential contributors to persistent fatigue in a structured way. Not every possible cause will be identified through routine blood and urine tests, and additional investigations may be recommended depending on your results.
Introducing our Tired All the Time Health Assessment in Glasgow
If ongoing fatigue is affecting your quality of life, Glasgow Medical Rooms offers a dedicated Tired All the Time Health Assessment designed to investigate common underlying causes.
The assessment provides a focused investigation into persistent fatigue, including potential hormonal imbalances, nutritional deficiencies, thyroid issues and other medical factors.
Rather than relying on a single test, the assessment combines a clinical review with a broad panel of blood tests and laboratory screening.
What’s included in the assessment?
Your assessment includes:
- A review of your medication and lifestyle history.
- Height, weight and BMI measurement.
- Blood pressure measurement.
- Full blood count.
- Urinalysis.
- Diabetes health screening.
- Nutritional health testing.
- Iron status testing.
- Kidney health screening.
- Infection and inflammation testing.
- Bone health testing.
- Thyroid health testing.
This combination allows your clinical team to review several relevant aspects of your health when investigating ongoing fatigue.
What does the appointment process involve?
We aim to make the process clear and straightforward, with time to discuss your symptoms and understand your results.
Step 1: Initial 30-minute consultation
Your first appointment is a 30-minute consultation with an Advanced Nurse Practitioner.
This appointment provides an opportunity to discuss your fatigue, relevant symptoms, medical history, medication and lifestyle factors. Your clinical assessment and the investigations included in the package help establish the information needed to investigate possible causes.
Step 2: Blood tests and laboratory screening
Your blood and urine samples are analysed as part of the assessment, covering the areas outlined above.
Results are typically available within seven days.
Step 3: Follow-up with an experienced GP
Once your results are available, you will have a 30-minute follow-up appointment with an experienced GP.
Your GP will review your results in detail, explain any significant findings and discuss appropriate next steps. Depending on the results, this may include treatment recommendations, lifestyle advice, repeat testing or further investigations.
The aim is to help you better understand your health and make informed decisions about any additional care you may need.
Why investigate persistent fatigue rather than simply pushing through?
It can be tempting to accept tiredness as an unavoidable part of modern life, particularly when you have a demanding job, family commitments or a busy schedule.
However, persistent fatigue should not automatically be attributed to age, stress or a lack of sleep.
Investigating ongoing symptoms can help identify treatable conditions, highlight areas that require further assessment and provide reassurance where appropriate.
Even when initial tests do not identify a clear explanation, your symptoms still matter. Your clinician can help determine whether further assessment or a different approach is needed.
A health assessment is not a guarantee of finding a specific cause, but it can be a useful starting point for understanding persistent tiredness.
Book your Tired All the Time Health Assessment
If you are tired all the time and want to understand why, our dedicated assessment offers a structured way to investigate potential underlying medical factors.
At Glasgow Medical Rooms, the process includes an initial 30-minute consultation with an Advanced Nurse Practitioner, comprehensive blood and urine screening, and a 30-minute follow-up appointment with an experienced GP to review your results.
With results typically available within seven days, you will have the opportunity to discuss your findings and the next steps with a clinician.
You do not have to keep guessing why you feel exhausted. Take the first step towards understanding your health.
Ready to book?
Book your Tired All the Time Health Assessment at Glasgow Medical Rooms using our online booking system.
BOOK YOUR ASSESSMENT
Please note: This assessment investigates a range of potential contributors to fatigue but cannot diagnose every possible cause. Additional investigations or referrals may be recommended based on your symptoms and results. The assessment is not a substitute for urgent medical care when symptoms require immediate attention.
