Recommended Physicians
We believe in pairing conventional care with root-cause strategies. Use this page to explore providers and directories you can discuss with your own physician.
Root Cause Medicine
Root Cause Medicine is the future of healthcare  and it’s available now if you know where to look. While traditional medicine often focuses on managing symptoms, Root Cause physicians dig deeper to find why the symptoms are happening in the first place. These doctors can be conventionally trained MDs, Functional Medicine practitioners, or other forward-thinking providers who use advanced tools like genetic testing to uncover hidden deficiencies and biochemical bottlenecks that quietly drive disease.
Here’s the reality: you can eat the cleanest diet in the world, but if your body can’t absorb or process certain nutrients  like B vitamins  you can still end up in serious trouble. We’ve seen cases where a heart attack wasn’t caused by clogged arteries, but by a long-term B-vitamin deficiency due to poor uptake. The ER treats the crisis with medication, but the real solution would have been restoring that nutrient in a form the body could actually use.
Genetic testing can also reveal antioxidant gaps. For example, if you don’t produce enough Superoxide Dismutase  the antioxidant that protects your mitochondria  you may be among the half of people at higher risk for cancer. If you know this in advance, you can supplement strategically and tilt the odds in your favor.
That’s why we recommend everyone have both: a trusted medical doctor and a Root Cause or Functional Medicine provider. This gives you the best of both worlds  rapid intervention in emergencies, and a proactive, personalized plan to keep you from getting sick in the first place.
Research: Nutrigenetics & nutrient utilization (review)
Featured Root-Cause Physician: Dr. Dan Purser (DanPurserMD.com)
Examples of Root Cause & Genetic Testing Physicians
If you're exploring root cause genetic testing practitioners, here are a few examples:
- Functional Medicine Associates  London, UK (IFM-certified; DNA-informed consultations).
- Angel Longevity Medical Center – Dr. Anju Mathur, MD  Los Angeles, CA, USA.
- Institute for Functional Health  San Antonio, TX, USA.
- Cleveland Clinic Center for Functional Medicine  Cleveland, OH, USA.
- The Living Proof Institute  Ontario, Canada.
- IFM: Find a Practitioner  directory for U.S./Canada and worldwide.
We do not personally know or recommend these providers  this list is for educational purposes only.
Try a search like: “functional medicine doctor genetic testing near me†or “naturopathic doctor specializing in nutrigenomics near me.â€Â
Functional & Naturopathic Doctors  and Why We Suggest Both
We are not against medical doctors. The conventional medical system is designed to diagnose and treat symptoms  invaluable for acute care and serious diagnoses. We recommend both:
- Have an MD/DO: diagnostics, imaging, prescriptions, and acute care.
- Add a functional or naturopathic doctor: deeper labs, lifestyle, and nutrient-first strategies to address root causes.
What is a Functional Medicine Doctor?
Clinicians trained to find upstream drivers of disease, integrating advanced labs with nutrition, sleep, stress, toxin reduction, and targeted supplementation.
What is a Naturopathic Doctor (ND)?
Clinicians trained in both conventional sciences and natural therapeutics (nutrition, botanicals, lifestyle). Focused on prevention and restoring function.
Second opinions save time. If you receive a diagnosis, consult your MD/DO and a root-cause clinician to explore all available options  conventional and integrative.