What is a glioblastoma and how is it treated?      http://www.cduma.com/blog/what-is-a-glioblastoma-and-how-is-it-treated/   Glioblastoma risk factors:  Like most tumors, there is no known cause of brain tumors   like glioblastomas, however, some people believe there is a link  between alcohol consumption, ionizing radiation, and the viruses HHV-6 ,  SV40, and cytomegalovirus. More common risk factors include:      Age, particularly for those over 50  Gender, with a slight skew towards men than women.  Being diagnosed with a low-grade astrocytoma (brain tumor), which can develop into a higher-grade tumor.  If you are Caucasian, Hispanic, or asian.  Having a diagnosis of neurofibromatosis, Von Hippel-Lindau disease,  Turcot syndrome, tuberous sclerosis, or Li-Fraumeni syndrome