24/08/2026
Fatigue can be more than simply feeling tired. With leukaemia, one may experience a persistent lack of energy that doesn’t improve with sleep or rest and can feel very different from your usual tiredness.
Leukaemia can cause fatigue because the disease can affect the production of healthy blood cells, including red blood cells, which can lead to anaemia. This may leave you feeling unusually weak, drained or short of breath, even after everyday activities.
Fatigue can have many causes, but if you’re experiencing **unusual or persistent tiredness**, particularly alongside other symptoms such as unexplained bruising or bleeding, frequent infections, fever, weight loss or breathlessness, speak to your GP.
**Don’t ignore changes that feel unusual for you.**