Precision nutrition for cancer care

Trusted oncology dietitians + microbiome science

Helping patients navigate cancer with personalized, microbiome-informed nutrition.

Registered Dietitian

Real people. Real guidance.

A registered dietitian speaking with a patient.
  • Live, one-on-one support
  • Personalized nutrition plans
  • Food and supplement guidance
  • Here with you every step of the cancer journey

Our Unique Advantage

We combine expert human guidance with microbiome science to make nutrition support more specific, practical, and connected to your care context.

The Microbiome

Tiny microbes. Big impact.

A close-up illustration of microorganisms inside the gut.
  • Trillions of microorganisms in your gut
  • Digest food and create beneficial or harmful substances
  • Interact with your immune system
  • A unique balance that can inform nutrition support

Guided by expertise. Informed by your microbiome. Built for the cancer journey.

Why the gut matters

Nutrition care has treated the gut without a way to measure it.

Oncology dietitians do skilled work with the tools they have: screening surveys, weight trends, and standard labs. Those tools are a step removed from the biology that can shape food tolerance, symptoms, and recovery needs. A growing body of published research connects the gut microbiome with treatment context, side-effect patterns, and immune biology. Oncobiomix adds the missing layer: a direct read of the gut.

The microbiome as a mediator of nutrition
01 Diet
Fiber and plant compounds
Protein
Fats
Fermented foods
02 Gut microbiome
Gut Microbiome Icon

Trillions of microbes, shaped by what you eat.

03 Microbe-specific functions
Fermentation
Metabolism
Modulation
Synthesis
04 Host effects
Immune function
Gut barrier integrity
Nutrient bioavailability

Diet shapes microbial function - and microbial function informs your nutrition.

Nutrition 1.0 - inferred

  • Screening surveys and questionnaires
  • Weight, BMI, and intake recall
  • Standard, generic lab panels
  • One-size handouts and guidelines

Nutrition 2.0 - measured

  • Gut-microbiome sequencing from one sample
  • Classification into six actionable gut groups
  • Interpretation by an oncology dietitian
  • A plan matched to your biology and phase of care
Patient Trifold

THE ONCOBIOMIX APPROACH

Precision oncology nutrition

Provide proactive nutrition care for your patients.

At our core, OncoBiomiX gives your patients access to oncology-trained registered dietitians. We use the gut microbiome to further hone their recommendations - so guidance is personalized, and proactive rather than reactive.

How it works

Simple. Human.

We combine what you eat with your microbiome to guide nutrition during cancer.

1 Assess

Current diet survey.

2 Analyze

Microbiome test + RebiomiX analysis.

3 Execute

Dietitian interprets both together.

4 Deliver

Nutrition plan + report to your doctor.

What this solves for your practice

  • Early, oncology-aware nutrition

    Specialized support most patients never receive - early, not after weight loss begins.

  • You stay in charge - and in the loop

    You remain the treating provider and receive summaries. Extending your care, not handing it off.

  • The microbiome in your practice, early

    An emerging precision tool without building a lab or interpreting data yourself.

  • Outcomes documented & sent back

    Quality of life, unplanned visits, and care touchpoints returned to you for the chart.

Provider Trifold Provider Order Form

Get started

Book your first visit.

Care begins with a physician's order. Start with the doctor-facing packet below, then book once your provider has sent the order.

Choose your path

Your first visit
Founders Price (first 100)

$399

Includes your Rebiomix kit, initial dietitian visit, and one follow-up.

Founders Price (first 100)

$29/month

Access to the nutrition team, two more follow-ups, and early wellness content as the program grows.

Booking powered by Healthie.

Our team

The people behind Oncobiomix.

Clinical, technical, and research leadership advancing microbiome-informed care for people navigating cancer.

Michael Liss MD, PhD, MAS, MBA - CEO

CEO

Michael Liss MD, PhD, MAS, MBA

Dr. Michael Liss is a physician-scientist, entrepreneur, and nationally recognized leader in microbiome-based cancer innovation. With over 200 peer-reviewed publications, funding from the NIH and Department of Defense, and multiple national awards - including the NCI Cancer Clinical Investigator Team Leadership Award - Dr. Liss is a champion of collaborative, translational science. He has led multi-institutional clinical trials and holds several recent patent applications for microbiome technologies. At Oncobiomix, he drives product innovation to transform cancer detection and gut health through AI-powered microbiome diagnostics and therapeutics.
James White, PhD - CTO

CTO

James White, PhD

James Robert White is founder and principal analyst at Resphera. He holds a PhD in Applied Mathematics and Scientific Computation from University of Maryland - College Park.
Traci Roberts, MS, RD, DCN - Oncology Dietitian Lead

Oncology Dietitian Lead

Traci Roberts, MS, RD, DCN

Traci Roberts, DCN, RDN, CSO, is an oncology dietitian, clinical leader, and co-founder of Oncobiomix. She has spent the past eight years providing specialized nutrition care to people living with cancer and is a Board Certified Specialist in Oncology Nutrition. Her clinical work has given her extensive experience helping patients navigate the nutritional challenges of cancer and its treatment while translating complex medical and nutrition information into practical strategies tailored to each person's needs, goals, and circumstances.

Traci holds a Doctor of Clinical Nutrition and brings a broader background spanning clinical nutrition, research, leadership, and biotechnology. This combination of patient-care experience and scientific training shapes her work at Oncobiomix, where she focuses on translating emerging microbiome science into practical, evidence-informed tools for oncology nutrition care. Her approach reflects a core philosophy of Oncobiomix: technology and microbiome data can provide valuable insight, but meaningful precision nutrition comes from combining those insights with the expertise of an oncology dietitian and an understanding of the individual patient.
Molly Doris - Research Program Manager

Research Program Manager

Molly Doris

Molly Doris has a Bachelor of Science in Biochemistry and over a decade of research experience. Prior to joining Oncobiomix, Molly served as a Senior Research Coordinator for the Department of Urology at the University of Texas Health Science Center at San Antonio. Molly has extensive knowledge in patient recruitment, laboratory affairs, and regulatory compliance. She is committed to promoting excellence in research, safeguarding data integrity, and maintaining the highest quality standards in healthcare research. Molly's role at Oncobiomix is to develop and implement advanced strategies to help execute innovative research projects, while ensuring all project efforts adhere to ethical standards and legal requirements.
Charles Leach MD - CMO

CMO

Charles Leach MD

Charles T. Leach earned his BA in Chemistry from Point Loma University in San Diego where he participated in summer research. He subsequently received his Doctor of Medicine degree at the University of Utah in Salt Lake City. During his time in Utah, he was actively engaged in research focused on identifying the elastin gene sequence. He followed this training with a residency in Pediatrics and a fellowship in pediatric infectious diseases at the University of California Los Angeles. During his fellowship, he began his studies on herpesviruses as cofactors in AIDs patients. He obtained his first faculty position at the University of Texas Health Science Center in San Antonio where he continued his studies of infectious diseases, primarily in pediatric AIDs patients, and was an active member of the Pediatric Oncology Group (POG). He and his colleagues specifically studied the contribution of herpesviruses to the development of cancer in children with AIDs, resulting in numerous high impact papers, including in JAMA and The New England Journal of Medicine. He worked at UT Health for 25 years in the Department of Pediatrics, during which time he held numerous leadership roles, including Director of Research and Chief of the Division of Infectious Diseases. During his final years in academia, he served as Division Chief for Infectious Diseases at Children's Hospital of San Antonio (CHOSA) as well as Professor of Pediatrics in the Baylor College of Medicine. Recently, he joined Oncobiomix as Chief Medical Officer.

Focus

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