Fatigue is a symptom that can be associated with lethargy and constant tiredness. Fatigue can also lead to an overall lack of energy physically, mentally, or a combination of both occurring at the same time.

Fatigue, chronic tiredness, lack of energy, lethargy and disinterest in usual activities can arise from a wide range of reasons. Fatigue can be caused by lifestyle, a mental or medical condition, or a combination of factors


Lifestyle factors which include:

  • Poor sleep hygiene
  • Excessive caffeine consumption
  • Lack of regular exercise
  • Alcohol consumption
  • Physical exertion
  • Poor diet
  • Lack of sleep


Medical causes which include:

  • Infection
  • Thyroid dysfunction
  • Anaemia
  • Nutritional deficiency
  • Sleep disorder
  • Eating disorder
  • Cancer
  • Diabetes
  • Congestive heart failure


Psychological causes which include:

  • Depression
  • Anxiety
  • Stress


If you are experiencing prolonged lethargy or fatigue, you should seek medical review. Our doctors at Mint Medical Centre are able to help you diagnose the root cause or causes, and provide you with the appropriate advice and treatments.