We are more than 8,000 prostate cancer survivors, all treated with proton therapy.
You can beat prostate cancer. The Brotherhood of the Balloon can help.

The only criteria for membership is having been diagnosed with prostate cancer and choosing proton treatment.

Questions about proton therapy?

Want to speak with former proton patients?



The Advantages of Proton Therapy

  • Unlike traditional radiotherapy treatment, proton radiation is directed to the tumor with pinpoint accuracy resulting in less damage to surrounding healthy organs and tissue.
  • With proton, doctors have the ability to deliver a higher dose of radiation to the tumor – and the higher the radiation dose, the better the chance of destroying all the cancer.
  • Treatment is non-invasive and painless.
  • Treatment is provided in an outpatient setting – patients can schedule treatment early in the morning and have the rest of the day to work or play.
  • There is usually no impact on a patient's energy level and no recovery time.
  • Significantly lower chances of secondary cancers later in life.
  • Overall, there are fewer, if any, side effects compared to other treatment options.


Proton Therapy Patient Surveys

2014 Survey: Nearly 4,000 former proton patients representing 12 proton centers responded. View key findings. Read the press release. Read the complete report
2013Survey: Nearly 2,000 former proton patients responded. Read the press release. Read the executive summary.

Dig deeper into the results.


You Can Beat Prostate Cancer Book

The Book You Need to Read

BOB founder Bob Marckini has written a book that removes much of the mystery, confusion, and fear about what to do when you are diagnosed with prostate cancer. Speaking from personal experience as a "graduate" of the Loma Linda University Cancer Center proton treatment program in 2000, he makes a strong case for considering proton therapy as a viable option for avoiding radical surgery and other treatment options that typically cause debilitating side effects. 

Read the Kindle version. Buy the paperback version

Helpful Links

BOB Blog

Read breaking news about proton therapy. Leave feedback on stories that interest you. Stay up-to-date on prostate cancer and proton therapy news.

Patient Video Testimonials

Why choose proton therapy? Watch five real patients; hear five real stories.  

Ten Year Proton Study

Loma Linda University Cancer Center analyzed results of proton therapy for localized prostate cancer, with emphasis on biochemical freedom from relapse.

Introduction to Proton Therapy

What is the treatment process really like? How does proton compare to other treatment options? What is the cure rate? What are the side effects?

Dig Deeper into Proton Therapy

Learn the physics. Learn about the equipment used in proton therapy delivery. Search for clinical trials. Learn about proton therapy for pediatric cancers.

The National Association for Proton Therapy

NAPT is registered as an independent, non-profit, public benefit corporation providing education and awareness for the public, professional and governmental communities. Founded in 1990, it promotes the therapeutic benefits of proton therapy for cancer treatment in the U.S. and abroad.

Proton Therapy Online Magazine

Proton Therapy Today is an editorial website which gathers serious, trustworthy stories and information about the world of proton therapy.

Mayo Clinic Explains

What's the difference between standard radiation therapy and proton beam therapy? How do doctors decide which one to use? How do doctors decide which treatment to use?

BOB Member Blog

Jim Tuggey was treated with proton therapy for his prostate cancer in 1999. Learn how Jim is doing 16 years after treatment. Read a detailed account of his treatment experience.