• Founded in 2008, the California Brain Tumor Association is a leading non-profit organization

    dedicated to safeguarding public health. We believe that it is inexcusable to allow

    technological advances invented to enrich our lives rob us of our lives instead.


    CABTA fights to make prevention the cure and expose environmental hazards that endanger public health.

    We fight to educate you, your children and grandchildren because you have the right to know

    health and safety information about avoidable environmental health threats.


    It is our ethical duty to focus on prevention and safety. Brain Cancer is an insidious disease,

    and we are motivated to turn avoidable tragedy into selfless advocacy.


    We offer numerous programs, provide resources, educate communities, publish articles, develop and promote constructive policy changes, and advance cutting-edge research efforts.

  • Leadership Team

    Ellie Marks

    Executive Director

    Entering the brain tumor world in 2008, Ellie became active after her husband was diagnosed with a malignant brain cancer. Ellie has testified to Congress, attends International Expert Conferences, and has appeared on the Dr. Oz Show, Larry King Live, and many other national newscasts. Ellie is an outspoken advocate for educating, advocating, and legislating nationwide. Ellie is one of the lead authors of a legislative Briefing Book, which has been translated into 8 languages worldwide.

    Zack Marks


    Zack graduated from the University of San Francisco with a Masters in Public Affairs and Practical Politics.

    Zack’s political experience includes working for Senator Ted Kennedy on Capitol Hill, the Governor of Colorado, the San Francisco Mayor, the SF Department of Elections, and serving as an SF Committee Chairman and Commissioner. He has also worked as the President and CEO of a Chamber of Commerce. In 2008, Zack founded CABTA in honor of his father Alan.


  • What We Do


    We testify to the US Congress, pass landmark public health legislation...


    Our Dream Program make dreams come true for brain tumor victims and their families. For example, we arranged for the Solomon family to go to a San Francisco Giants baseball game and run the bases. Andy Solomon's daughter got to steal second base with her Dad, meet the players, and was welcomed in front of the entire ballpark.


    We host educational symposiums featuring Senators and Doctors, make award-winning documentaries, teach classes, distribute posters at Pediatrician offices... media



    We have lost far too many friends over the years from tragedies caused by avoidable brain cancer. We feel that it is our duty and ethical obligation to speak for those who can no longer speak for themselves. These terribly sad stories remind us that it could happen to you, your children or your grandchildren.


    Our Therapy Dog Program is run by our golden retriever Teddy who is an SF SPCA therapy dog that visits brain tumor patients at the hospital or in their home.


    We also provide advice and references for some of the best doctors in your area? Do you just need to talk to someone that has been through what you're going through? Please give Ellie a call at 925.285.5437



  • Cell Phones

    Concentrating CABTA efforts on cellphone radiation over the past nine years has yielded extremely important scientific and policy developments. The International Agency for Research on Cancer (IARC) of the World Health Organization (WHO) published an explanation for their decision that cell phone radiation is a “possible human carcinogen” in the same category as lead, DDT, and jet fuel.


    Researchers and scientists have proven negative long-term health consequences of cell phone use because radiation damages and breaks living DNA. Furthermore, research has demonstrated that a two minute phone call disables the blood-brain barrier. Undeniably, cell phones are inseparable, indispensable, and ubiquitous with the potential to lead to a global epidemic of brain tumors.

  • Cell Towers


  • Comments

    “Stay strong and courageous.

    Your work is of great importance.”

    - California State Senator Mark Leno -

    "I am in awe of your nonprofit. You are going to do great things. Your ability to turn such a tragedy into selfless advocacy speaks volumes."


    "My young daughter of 20 months will not be getting a cell phone because of the knowledge I have because of people like you. Thank you, thank you. Let me assure you, that your willingness to not be silent is an inspiration."

    "I appreciate your efforts and commend your strength. May you be blessed with strength and inscribed in the book of life."


    "What a bold act of love, and

    of regaining power for the family.

    You will make the difference you seek.

    Keep on speaking, keep on fighting."

    "Your testimony was powerful and a definite memorable moment in the Senate hearing."

    "Your website is amazing!

    I sent it to everyone on my email list.

    It's easy to navigate and so well written

    and informative."

    "You have my admiration for educating the public about the dangers of cell phones."

    "Thank you for what you’re doing.

    Great website."


    "Your nonprofit is phenomenal and a tribute.

    You are surviving and thriving through your determination to make a real difference."

    "The contents of your letter and website are so well written, powerful and tragic."

    "I am so proud that you went to DC.

    God bless you for your activism and courage."

    "I'm proud of your efforts!

    Keep up the good fight. I will have a heart to heart with my children."

    "The ripple effect of your positive and bold action will be felt around the world."

    "Your website blew me away

    and I cried as read each section.

    It is powerful."

    "Your web site is really amazing.

    What a great job - again."

    "I am filled with pride over your testimony yet saddened for what you have been and will be going through. Please know that our thoughts and prayers are with you."

    "I am a firm believer that God has placed this burden on you for a reason and I think that reason is because you have the guts to do the battle that needs to be done."

    "I know for myself, you have enlightened me on a mission to protect myself and most of all my kids from over-use of a cell phone."

    "Thank you very much for taking the time to inform me. I will help you with your path to educate as many people that I know."

    "Thanks so much. I will be forwarding your website to all my family and friends."

    "Incredible, your poise, openness and compassion in telling your story and the risks associated with cell phone use were amazing."

    "Thanks so much for being such a wonderful example. I doubt many folks I know would have the courage to do what you are doing."

    "Thank you for your work, keep on getting louder! I think it’s great what you are doing for families of brain cancer patients. I wish WA had something like your organization. We had no one to help us."

  • Contact Us

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  • Thank you for your support.

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