Tiredness (fatigue)

Feeling tired all the time (fatigue) is common and can have many causes. Sometimes, it’s due to lifestyle choices, but it can also be a sign of a medical condition.

Symptoms of Fatigue:

  • Feeling very tired all the time.
  • Struggling to stay awake or concentrate.
  • Feeling weak, dizzy, or lacking energy.
  • Feeling irritable or low in mood.

NHS Information for Patients

The NHS website provides lots more Information on Tiredness & Fatigue.

Common Causes of Fatigue:

Lifestyle Causes:

  • Not getting enough sleep – Poor sleep habits, late nights, or shift work can lead to tiredness.
  • Poor diet – Not eating enough, skipping meals, or eating too much junk food.
  • Not enough exercise – Regular activity helps boost energy levels.
  • Too much caffeine or alcohol – These can affect sleep quality.
  • Stress, anxiety, or depression – Mental health issues can cause exhaustion.

Medical Causes:

  • Anemia – A lack of iron can make you feel weak and tired.
  • Underactive thyroid (hypothyroidism) – The body slows down, causing fatigue.
  • Diabetes – High or low blood sugar can lead to tiredness.
  • Sleep disorders – Conditions like sleep apnea interrupt sleep.
  • Chronic fatigue syndrome (ME) – Long-term tiredness with no clear cause.

How to Boost Energy Levels:

  • Get enough sleep – Stick to a regular sleep schedule and avoid TV & device screens before bed.
  • Eat a balanced diet – Include plenty of fruits, vegetables, protein, and whole grains.
  • Stay hydrated – Drink enough water throughout the day, not so much at bedtime.
  • Exercise regularly – Even light activity can help improve energy levels.
  • Manage stress – Try relaxation techniques like meditation or deep breathing.
  • Limit caffeine and alcohol – Too much can interfere with sleep and energy levels.

When to See a Doctor:

  • Tiredness lasts more than 4 weeks with no clear cause.
  • You feel very weak, dizzy, or faint.
  • You have unexplained weight loss.
  • You feel low, anxious, or have trouble sleeping.

A doctor may do tests to check for medical conditions. Treating the cause of fatigue can help you feel more energetic.

Final Tips:

Small lifestyle changes can make a big difference. If fatigue continues, seek medical advice.

Updated on April 3, 2025
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