Currently, the exact causes of primary brain tumours are not yet fully documented. Most brain tumours develop from the uncontrollable and abnormal growth in brain cells. Some risk factors include:
- Exposure to high doses of ionizing radiation (used to treat another cancer you may have)
- Gender (males are at higher risk)
- Increasing age (over 65)
- Race (Caucasians are at higher risk)
In addition, some hereditary factors increase your risk of brain tumour development, such as Neurofibromatosis, which is an inherited condition that affects the development and growth of nerve cells. Your risk also increases if you have a weakened immune system (if you have AIDS for example). So far, there has been no documented evidence to prove that the use of mobile phones and microwave ovens can cause brain tumours.