Question

Q:what are the symptoms and causes of leukaemia?

Answer 1

Leukemia happens when the DNA of immature blood cells, mainly white cells, becomes damaged in some way.
This causes the blood cells to grow and divide continuously, so that there are too many.
Healthy blood cells die after a while and are replaced by new cells, which are produced in the bone marrow.
The abnormal blood cells do not die when they should. They accumulate, occupying more space.
As more cancer cells are produced, they stop the healthy white blood cells from growing and functioning normally, by crowding out space in the blood.
Essentially, the bad cells crowd out the good cells in the blood.
Signs and symptoms of leukemia vary.

They may include:

being tired all the time
weight loss
having fevers or chills
getting frequent infections

Answer 2

causes
Leukemia happens when the DNA of immature blood cells, mainly white cells, becomes damaged in some way.

This causes the blood cells to grow and divide continuously, so that there are too many.

Healthy blood cells die after a while and are replaced by new cells, which are produced in the bone marrow.

The abnormal blood cells do not die when they should. They accumulate, occupying more space.

As more cancer cells are produced, they stop the healthy white blood cells from growing and functioning normally, by crowding out space in the blood.

Essentially, the bad cells crowd out the good cells in the blood.

symptoms
They may include:

being tired all the time

weight loss

having fevers or chills

getting frequent infections