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