For months, Edward (Ed) Waldner knew something wasn't right. At 55 years old, he felt constantly drained, no matter how much or how little he had done during the day. He wondered whether sleep apnea might be to blame. He also noticed subtle changes in the way he walked, including times when his heels seemed to drag.

When his symptoms became particularly severe one day, Waldner went to the Emergency Department to get checked out.

"The doctor said I had a mass on my brain and needed to see an oncologist," says Waldner.

The mass turned out to be glioblastoma, an aggressive and often deadly form of brain cancer. Standard treatment typically includes surgery to remove as much of the tumor as possible, followed by radiation therapy and chemotherapy. Even with these treatments, however, the cancer frequently returns.

Testing Vitamin B3 as a Glioblastoma Treatment