In 2018, former U.S. senator John McCain died from glioblastoma, a very aggressive type of brain cancer.

While it doesn't travel to other parts of the body, this cancer can rapidly grow between brain cells, killing the majority of people who have it. But, thanks to developments in chemotherapy, about 48% of people with glioblastoma now live for about two years and 15% live for about five years--doubling the life expectancy from 20 years ago.

Now one doctor is finding another way to extend the lives of these people. Dr. N. Scott Litofsky discusses his research and how over-the-counter, readily available supplements may be able to increase the efficacy of chemotherapy treatment.

A pilot study revealed that common antioxidants, such as melatonin, vitamin D3 and alpha-lipoic acid, may be able to slow cancer cell growth.

Learn more about why brain cancer is on the rise, and how this type of therapy can help treat it.

Bonus
Surprising Reasons to Take Aspirin (And When to Skip It)