Causes of brain cancer
Researchers have found that the main cause of brain cancer is due to mutations of the DNA of the genes, thus proving that brain cancer is genetic.
There are two types of brain cancer: Primary brain tumors, that originates in the brain or close to it and secondary (metastatic) brain tumors that starts from another part of the body and spreads to the brain.
Primary brain tumor is less common than the secondary brain tumor. It begins when normal cells acquire mutations in their DNAs thus allowing the cells to grow and divide while the healthy cells continue to die.