About
Dr. Rebecca Lake, PhD, MS, RD, LD
Precision Nutrition & Health, LLC is a Des Moines, Iowa–based practice founded by Dr. Rebecca Lake, PhD, MS, RD, LD, a clinical and research dietitian with experience providing personalized nutrition care for both pediatric and adult populations. Dr. Lake earned her PhD in Dietetics and Nutrition from Florida International University and her Master of Science in Pharmaceutical Sciences from the University of Florida. Her interdisciplinary training integrates nutrition science, genetics, pharmacology, toxicology, and biochemistry to better understand the complex factors that influence health, disease, and longevity.
At Precision Nutrition & Health, Dr. Lake takes a root-cause, evidence-based approach to care, developing individualized nutrition strategies tailored to each client’s unique needs, health conditions, and goals. Her expertise includes gastrointestinal disorders, diabetes and metabolic health, cardiovascular disease, oncology nutrition, neurological conditions, healthy aging, women’s health and fertility, weight management, and inborn errors of metabolism and other genetic disorders. She also has specialized interests in nutrigenomics, nutrigenetics, drug–nutrient interactions, and longevity research.
In addition to clinical practice, Dr. Lake provides nutrition consulting services, conducts research, performs data and statistical analyses, and delivers academic and professional presentations aimed at advancing nutrition science and improving health outcomes. Through Precision Nutrition & Health, she is committed to translating the latest scientific evidence into practical, personalized solutions that empower individuals, families, and organizations to achieve optimal health.
Services PrOVIDED
Clinical Nutrition Services
- Nutritional Risk Screening
- Nutrition-Focused Physical Examination (NFPE via Telehealth)
- Nutrient Analysis
- Laboratory Testing Review
- Genetic Screening
Nutrition Counseling and Education
- Personalized Meal Planning
- Meal Preparation Strategies
- Nutrition Education
- Virtual Grocery Store Walkthroughs
- Community Education and Engagement
Research and Academic Services
- Scientific Literature Reviews
- Academic Adjunct Services
- Statistical Analysis (Frequentist and Bayesian Approaches)
- Data Analytics and Research Consultation
Bookings & Additional InfoRMATION
Nutrition Counseling Through Berry Street
Dr. Rebecca Lake provides personalized, evidence-based nutrition counseling through Berry Street, a platform that connects clients with registered dietitians and offers streamlined insurance verification, appointment scheduling, and virtual nutrition care. To learn more about Berry Street and its services, visit https://www.berrystreet.co/.
To schedule a nutrition consultation with Dr. Lake, please use the following link:
https://visit.berrystreet.co/providers/Rebecca-Lake
If you have any questions or need additional information, please feel free to contact Dr. Lake at rlake001@outlook.com.
Insurance & Payment Options: Coverage varies by insurance plan, but many Berry Street patients pay little to nothing out of pocket for their visits. For individuals without insurance coverage—or those who prefer not to use insurance—self-pay options are available.
Other Nutrition Research, Consulting, or Academic Services:
For inquiries regarding research collaborations, consulting services, statistical analysis, data analytics, academic partnerships, or other professional services, please contact rlake001@outlook.com.
Selected Professional, Academic, and Research Experience
- Consulting Registered Dietitian | Berry Street
- Adult and Pediatric Registered Dietitian | ChildServe
- Adjunct Instructor, Principles of Nutrition | Florida International University
- Guest Lecturer | Des Moines University College of Medicine
Topic: Supplemental Feeding and Nutritional Assessment - Graduate Assistant | Florida International University
- Member, Statistical Machine Learning Group | Florida International University
- Dietetic Intern, Research Track | Florida International University Clinical, Community, Food Service, and Research Rotations Completed at Jackson Memorial Hospital, and the University of Miami
Selected Publications, Presentations, Awards & Distinctions
Peer-Reviewed Publications
Lake, R., Liuzzi, J., & Yoo, C. (2025). Insights into the interplay among zinc, biological aging, fasting, energy intake, and inflammation: A cross-sectional analysis using 2015-2018 NHANES participants. Journal of Trace Elements and Minerals. https://doi.org/10.1016/j.jtemin.2025.100233
Pazos, R., Palacios, C., & Campa, A. (2020). Urinary Paraben Concentration and Its Association with Serum Triglyceride Concentration in 2013-2014 NHANES Participants: A Cross-Sectional Study. Journal of Environmental and Public Health. https://doi.org/10.1155/2020/8196014
Published under the name Rebecca Pazos.
Published Abstracts
Pazos, R., & Liuzzi, J. (2020). The Association of Serum Zinc with Biomarkers Related to Longevity. Current Developments in Nutrition, 4(Supplement 2), 1474. https://doi.org/10.1093/cdn/nzaa061_102
Pazos, R., Palacios, C., & Campa, A. (2019). Urinary Paraben Concentrations and Its Association with Serum Triglyceride Concentrations in 2013–2014 NHANES Participants. Current Developments in Nutrition, 3(Supplement 1), nzz044.P08-120-19. https://doi.org/10.1093/cdn/nzz044.P08-120-19
Presentations
Pazos, R. Understanding the History and Nutritional Management of Phenylketonuria (PKU). Presentation to the Leadership Education in Neurodevelopmental and Related Disabilities (LEND) Program, Mailman Center, University of Miami, Miami, Florida. November 15, 2019.
Pazos, R. Understanding and Managing Type 2 Diabetes. Staff Education Presentation, Jackson Memorial Hospital, Miami, Florida. July 15, 2019.
Scientific Poster Presentations
Pazos, R., & Liuzzi, J. (2020). The Association of Serum Zinc with Biomarkers Related to Longevity. Poster presented at the American Society for Nutrition Annual Meeting, Virtual Conference. Abstract Submission No. 840467.
Pazos, R., Palacios, C., & Campa, A. (2019). Urinary Paraben Concentrations and Its Association with Serum Triglyceride Concentrations in 2013–2014 NHANES Participants. Poster presented at the American Society for Nutrition Annual Meeting. Abstract Submission No. 616248.
Awards & Distinctions
- Fellow, Dissertation Year Fellowship
- Dean’s Excellence Award
- Stempel Travel Scholarship