Honoring Legacy.
Inspiring Discovery.
Transforming Health.
Continuing the groundbreaking work of Dr. Mark Geier, we are committed to illuminating the roots of chronic illnesses and creating lasting impact for generations to come.
Welcome to the Institute of Chronic Illnesses, where science, integrity, and compassion unite to uncover the root causes of modern illness. We challenge the narrative. We follow the data. We honor the people.
Founded by the late Dr. Mark Geier—visionary researcher and fierce advocate for the truth—ICI has long stood at the forefront of investigating chronic illness, environmental toxins, and systemic health risks. Today, his legacy continues through the dedication of his son, David Geier, who walks boldly in his father’s footsteps with heart, courage, and clarity.
We invite you to explore our work, examine our findings, and be part of the shift toward a healthier future. From vaccines and fluoride to mercury exposure and neurological disorders—we’re not here to make noise. We’re here to make change.
A New Look at Health and Hope
At the Institute of Chronic Illnesses (ICI), we believe that true healing begins with honest questions and compassionate science. Our latest project highlights the voices and futures we fight for — children and families seeking answers, safety, and hope.
Explore how emerging research is helping us better understand the potential impacts of modern medical practices and why transparency, integrity, and advocacy are more important than ever.
"When we ask better questions, we build brighter futures."
Recent News
On September 8, 2025, President Donald Trump shared a video of David Geier and his father, Dr. Mark Geier, highlighting the use of thimerosal, a mercury-based preservative in vaccines. The Geiers have long raised awareness about mercury exposure and its potential health risks, advocating for safer alternatives in medical products.
Upcoming Events:
2025 Annual IAOMT Conference
A Prospective Longitudinal Cohort Study of the Impact of Childhood Water Fluoride Exposure on Tooth Decay Prevention and Neurodevelopmental Disorder Risk
David A. Geier, BA Biology, UMBC, is a researcher and director of the nonprofit Institute of Chronic Illnesses, Inc. He has authored nearly 200 scientific publications and presented to the Institute of Medicine. His background includes advanced studies in immunology, epidemiology, and vaccines, as well as contributions to the United Nations’ Minamata Convention on Mercury.
Greenville, SC
Saturday (Day 3) | Sept 6th, 2025
11:00 am – 12:00 pm ET
ICI Topics of Research
Fluoride in Water
Examining the silent effects of widespread fluoride exposure on developing minds and bodies.
Mercury Exposure
Exploring the long-term neurological risks linked to mercury in medicine and the environment.
Vaccine Safety
Challenging assumptions and asking critical questions about vaccine components and outcomes.
Neurological Disorders
Investigating the potential environmental and pharmaceutical contributors to autism and related conditions.
Be Part of the Healing. Be Part of the Change.
Your support helps fuel vital research, amplify courageous voices, and build a future where health and truth go hand in hand.
Every donation moves us closer to lasting impact — one discovery, one family, one future at a time.
The Institute of Chronic Illnesses is a registered 501(c)(3) nonprofit organization.
All donations are tax-deductible as allowed by law.
You’re viewing the early stages of our newly launched website. Content is being added regularly — thank you for your patience as we grow.