Who is affected

Brain tumours can affect people of any age, including children, although they tend to be more common in older adults.

More than 9,000 people are diagnosed with primarybrain tumours in the UK each year, ofwhich about halfare benign and half are malignant. Many othersare diagnosedwith secondary brain tumours.

The exact reason why some people develop primary brain tumours is unknown,but it's thought that certain genetic conditions such as neurofibromatosis type 1 and tuberous sclerosis and previous radiotherapy to the head increaseyour risk.

Content supplied by the NHS Website

Medically Reviewed by a doctor on 21 Dec 2018