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dоTERRA Scientists

Dr. David Hill, DC

Founding Executive, Chairman of Scientific Operations

For many years, Dr. David Hill has utilized the benefits of essential oils in modern health practices as a physician. He is well-known throughout the world as an expert in essential oils and integrative medicine. Dr. Hill partners with physicians, scientists, and hospitals around the world, defining and establishing the medical integration and use of essential oils in modern health practices for individual use.

He guides advances in essential oil science through a number of top university and research affiliations, providing more in-depth understanding for essential oils and their use. He is a frequent guest on many radio and televisions shows and has authored a number of books and other publications. Dr. Hill’s greatest joy is found in educating and empowering others and his family to take control of their own health.

Alexandrea Paul, MS

Quality Assurance, Director

Alexandrea Paul obtained her MA and MPhil degrees in ecology and environmental and evolutionary biology from Columbia University, New York with a focus on medicinal plants used in Haiti. She received her undergraduate bachelor's degree in zoology from Brigham Young University and her master's degree in botany on the medicinal uses of citrus from the University of Florida.

Alexandrea has over 20 years of dietary supplement experience. Her previous experience as the head of quality in a direct selling environment as the quality director at MonaVie and Neways and as the head of quality in manufacturing environment as quality director at NuStar and Kelatron. Alexandrea’s family is originally from Haiti. She grew up in New York, Port-au-Prince, Haiti, Nassau, Bahamas, Miami, FL and London, UK.

Nicole Stevens, PhD

Director of Clinical Research

Nicole Stevens has conducted research with essential oils for more than 20 years. She’s worked in quality control laboratories in the nutraceutical industry, as well as academic research laboratories at the University of Utah and the University of Nevada Las Vegas (UNLV) Cancer Research Institute. In addition to research, she’s taught courses in chemistry and biochemistry at Brigham Young University–Idaho and UNLV.

Nicole has been researching doTERRA essential oils since the company was formed in 2008. Currently, she serves as director of clinical research. Her main research revolves around essential oil biochemistry relating to human application, among other aspects of essential oil science actively being pursued by the Clinical Research team.

Nicole earned a bachelor’s degree in technical writing and a master’s in botany, both from Brigham Young University. She completed her doctorate in biochemistry and molecular biology from the University of Miami’s Miller School of Medicine. Nicole holds a Certified Principal Investigator (CPI) accreditation with the Association of Clinical Research Professionals and a Certified Clinical Research Professional (CCRP) endorsement with the Society of Clinical Research Associates. She’s also a Certified Phlebotomy Technician (CPT) with IV specialization, a Certified Clinical Medical Assistant (CCMA), and a Certified Electrocardiography Technician (CET).

Alex DaBell, MS

Director, Nutraceuticals and Innovation

For more than 15 years, Alex DaBell has worked with colleagues around the world to design and develop high-quality nutritional products. He enjoys learning about new discoveries in nutrition and brainstorming how those discoveries might make their way into new and existing doTERRA products.

Alex has a master’s degree in physiology and developmental biology and a bachelor’s in biology, both from Brigham Young University. Alex is pursuing a PhD in biochemistry and molecular biology from the University of Miami’s Miller School of Medicine, studying metabolic regulation, biochemistry, nutritional epigenetics, and various aspects of essential oil chemistry on health and wellness.

Alex, his wife, Lisa, and their four children enjoy going outdoors, playing boardgames, practicing the violin and piano, and trying new recipes.

Thao Le, BS

Managing Scientist, Personal Care and Household Products

Thao has demonstrated her love of science over two decades of working on personal care and household products. Prior to joining doTERRA, she’s helped create world-class products for Arbonne®, Nu Skin®, Neways®, Dr. Perricone, Pfizer, ProCyte, Pharmacia & Upjohn, and many more at Sorenco Laboratories.

Her key insights into cosmetic formulations started with her analytical chemist experience at Weider Global Nutrition, where she worked for eight years. She’s passionate about making the best products using the safest, most innovative ingredients. The satisfaction of consumers and Wellness Advocates after trying her products drives her to make more great products.

Thao earned a bachelor’s degree in chemistry from the University of Utah.

Damian Rodriguez, DHSc, MS

Health and Exercise Scientist

Dr. Damian Rodriguez has spent most of his life researching nutrition, exercise, and lifestyle behaviors associated with human performance and optimal wellness. Prior to joining doTERRA, Dr. Rodriguez worked in public health and as a strength and conditioning coach and nutritionist for collegiate and professional athletes.

During his time at doTERRA, Dr. Rodriguez has helped write many essential oil scientific studies, served as scientific editor for other publications, and represented the company as a healthy lifestyle expert. Currently, he’s focusing his efforts on metabolic health and is excited to help doTERRA expand its influence as a global leader in the wellness industry.

Dr. Rodriguez has a doctorate degree in health sciences from A.T. Still University, where he focused his research on obesity. His dissertation examined national trends in obesity and metabolic comorbidities. He also earned a master’s degree in exercise physiology, with an emphasis on athletic performance, a bachelor’s in nutritional science, and numerous professional certifications in exercise and nutrition.

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