Stem cells are being researched to treat medical conditions, but they are ethically controversial in many cases. Read about stem cells on our partner pages.
Leukaemia is a cancer that affects the formation of white blood cells. Learn about the different types, as well as symptoms and treatment options.
Chronic lymphocytic leukaemia (CLL)
Chronic lymphocytic leukaemia (CLL) is a common type of leukaemia that often progresses slowly without any symptoms and often doesn’t need treatment.
Influenza A is a virus that can cause the flu and serious illness. Learn about influenza A subtypes, and how vaccination can prevent infection.
Multiple myeloma develops when plasma cells build up abnormally in your bone marrow. Currently there's no cure but treatment is available.
Amyloidosis is a group of diseases that can affect the brain, heart, joints or kidneys.
Tunnel vision and night blindness are just 2 of the symptoms caused by the genetic eye disorder retinitis pigmentosa. Learn more about it here.
Blood transfusion is a safe procedure. Find out about the different types, why you might need a blood transfusion and what happens when you receive it.
Yellow fever is a disease that spreads through infected mosquitos in areas of Africa, Central or South America. Learn about the yellow fever vaccine.
Organ transplants involve removing an organ from a donor and putting it into someone who may be very ill or dying. Find out what's involved here.